methane and propane combustion equation

. For hydrocarbons that end in the suffix -ane the formula is C_nH_(2n+2). propane and some other hydrocarbons in trace amounts. Combustion equations Education in Chemistry May 2018 rsc.li/EiC318-airpollution . The easiest way to identify a combustion reaction is that the products always contain carbon dioxide and water. Um, and as a really useful trick for balancing equations about complete combustion, it is first useful to balance the number of carbon atoms and the number of Haijun Adams. In the reaction process heat energy is released equivalent to 891 kJ. 6. litres of . 5. The equation CH4 + 2O2 = 2H2O + CO2 Methane is now balanced, just the correct quantity for the reaction to complete. Well, as we typically do, we balance mass, and balance charge…and the typical rigmarole is to balance the carbons as carbon dioxide, and then the hydrogens as water, and THEN balance the dioxygen reactant… [math]CH_{4}(g) + 2O_{2}(g) → CO_{2}(g) +. 1. Methane emissions are highest during periods of low-temperature combustion or . This chemical reaction is a complete combustion of a hydrocarbon in the presence of excess oxygen. The equa- tion can be simplified by writing . 3. Extreme Scientist Dan Clements demonstrates how methane gas combusts in the hands of WTOL meteorologist Ellen Fritz 1 molecule of methane in an interaction with 2 molecules of oxygen forms 1 molecule of carbon dioxide and 2 molecules of water. The pro- prefix tells us we have 3 carbon. 2. However, methane is also produced as biogas via anaerobic bacterial decomposition of plant matter. Explanation: Oxidation: CH 4 + 2H 2O → CO2 + 8H + +8e− (i) Reduction: O2 + 4H + + 4e− → 2H 2O (ii) In both instances, mass and charge have been conserved (and they must be in order to reflect reality). Explained Process of Combustion of Propane: 1- Firstly, the carbon in the hydrocarbon propane, oxidizes with oxygen to produce carbon dioxide. for the complete combustion of methane, CH 4, found . So this question gives us the heat of combustion for methane and for propane and wants us to write the balance chemical equations for their respective combustion ins. In some cases, it's needed to limit temperature, such as for dryers. Propane is an alkane with the chemical formula C 3 H 8. We may neglect minor contributions, such as noble gases, carbon soot particles, and nitrogen oxides . All the atoms in the reactants form the products so the mass of the reactants and the products is the same. 1. methane (CH 4) + oxygen Æ 2. ethane (C 2H 6) + oxygen Æ 3. propane (C 3H 8) + oxygen Æ 4. butane (C 4H 10) + oxygen Æ 5. pentane (C 5H Complete combustion of methane ch4 balanced equation you write a chemical for the chegg com multimedia chapter 6 lesson 1 middle school chemistry reactions part 3 0 2 point uation propane c3h8 Complete Combustion Of Methane Ch4 Balanced Equation You Write A Balanced Chemical Equation For The Combustion Chegg Com Multimedia Balanced Equation . The result of incomplete combustion is, once again, water vapour, carbon dioxide and heat. The balanced equation for methane is CH4 + 2 O2 -> CO2 . . for the complete combustion of methane, CH 4, found . The reactants are on the left side of the equation and the products are on the right. View more. The current technology can make methane using equation (1), where x=1, with an efficiency of 10.2% with reference to the amount of incident solar energy compared to the . Combustion of methane Methane is a natural gas that is extracted and used as a fuel. combustion of hydrogen; combustion of methane; By recording the enthalpy change for these three processes, you can then solve for the enthalpy change of methane by rearranging the equations. Standard heat of combustion: The energy liberated when a substance X undergoes complete combustion, with excess of oxygen at standard conditions (25°C and 1 bar).In thermodynamical terms it is the negative of the enthalpy change for the combustion reaction.. nX + mO 2 → xCO 2 (g) + yH 2 O (l) + zZ + heat of combustion. Here are the equations for the complete combustion of propane, used in bottled gas: propane + oxygen → carbon dioxide + water. Worksheet #6: Combustion Reactions We will focus on the combustion of hydrocarbons. To achieve the same heat energy output, a natural gas burner must use 2.54 times the number of moles of fuel gas as a propane burner. Hydrocarbons react with oxygen to form carbon dioxide and water. The combustion of methane gas heats a pot on a stove.. Besi The combustion of methane is represented by the equation: CH4 + 2O2 → CO2 + 2H2O. It does, however, release less carbon dioxide into the atmosphere. It . In a first step, the catalytic combustion of methane, ethane and propane on a Pd(2 wt.%)/γ-Al 2 O 3 catalyst was investigated. 1, 2, 1, 2 Complete Combustion: The process of combustion taking place in ample supply of oxygen is known as complete combustion. >. Combustion is a chemical process in which a substance reacts rapidly with oxygen and gives off heat. The incomplete combustion of propane to give a solid pollutant and water . Complete combustion does NOT give carbon monoxide or soot.Check me out: http://www.. Discovered in 1857 by the . National Library of Medicine. Methane | CH4 | CID 297 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities, safety/hazards/toxicity information, supplier lists, and more. It is a highly exothermic reaction. National Institutes of Health. The heat of combustion = Heat of formation of products - Heat of formation of reactants. Methane: The molecular formula of methane is CH 4, and it is an example of a tetrahedral molecule with four equivalent C-H bonds (sigma bonds). In the present work, the performance of a 0.10 m .uidized-bed catalytic reactor in the combustion of methane and propane under premixed fuel-lean conditions is studied. (4) 2- Then, the hydrogen oxidizes to produce water vapour. Propane is usually removed from natural gas before being shipped to customers, but is also sold separately . In the complete combustion of ethane the number of oxygen molecules required is: Medium. where Z is any other products formed during the . The heat of combustion = Heat of formation of products - Heat of formation of reactants. The combustion of methane means that it is possible to burn it. Methane combustion showing molecular rearrangement Methane and propane are popular fuel sources in both the USA and Canada. All combustion reactions fall into the pattern: fuel + O2 ->CO2 + H2O. 1.5-2 EMISSION FACTORS 07/08 Formation of N2O during the combustion process is governed by a complex series of reactions and its formation is dependent upon many factors. H. 8 Burning of methane is:CH4 + 2 O2---------- â†' CO2 + 2 H2OCarbon monoxide is released after . Solved Problem 11.3 - In this problem Ethane (C 2 H 6 ) is burned with atmospheric air, and the volumetric analysis of the dry products of combustion yields the following: 10% CO 2 , 1% CO, 3% O 2, and 86% N 2. Here are the equations for the complete combustion of propane, used in bottled gas: propane + oxygen → carbon dioxide + water. It is a group-14 hydride, the simplest alkane, and the main constituent of natural gas.The relative abundance of methane on Earth makes it an economically attractive fuel, although capturing and storing it poses . According to Avogadro's law, 3 if the fuel gases are at the same temperature and . The heating value (or energy value or calorific value) of a substance, usually a fuel or food (see food energy), is the amount of heat released during the combustion of a specified amount of it.. Propane (C3H8) reacts with oxygen (O2) to make carbon dioxide (CO2) and water (H2O). A gas mixture of 4 litres of ethylene and methane on complete combustion at . CH 4 + 2(O 2 + 3.76 N 2) -> CO 2 + 2 H 2 O + 7.52 N 2. 2.54 CH 4 + 5.08 O 2 → 2.54 CO 2 + 5.08 H 2 O + 2.044 MJ. What Is The Balanced Chemical Equation For Combustion Of Propane Quora. the equation than are needed for the complete . The equation for the combustion of methane is: CH4 + 202 → 2H2O + CO2 a) If 50.0 L of methane (CH4) at standard temperature and pressure (STP) are burned, what volume of carbon dioxide will be produced at STP? . When this reaction takes place, the result is carbon dioxide (CO 2 ), water (H 2 O), and a great deal of energy. chemistry. The heat of combustion for propane is -2043 kJ/mol. and -976 KJ mol^(-1) at . Methane: Propane: The complete combustion reactions of methane and propane are shown below: Methane: CH4 + 2O2 ( CO2 + 2H2O + heat. ( Methane with 100% excess air) Input Methane CH 4 +2 x 2 (O 2 + 3.76N 2) Æ Propane: The molecular formula of ethane is C 3 H 8, and its structure is given below. Complete Combustion is the oxidation of hydrocarbon producing only carbon dioxide and water. b) If 50.0 L of methane at STP are burned, what volume of gaseous water at STP is produced? C 3 H 8 + 5O 2 → 3CO 2 + 4H 2 O. Here are the equations for the complete combustion of propane, used in bottled gas: . Methane is a colourless, odourless, highly flammable gas at room temperature and can be found in a wide variety of sources on Earth. Incomplete combustion. Combustion Formula is expressed by. The chemical equation for stoichiometric combustion of methane - CH 4 - with air can be expressed as. Balanced Equation. (4) The reaction can be summarized in the following chemical and word equations: C3H8 (g) + 5O2 (g) = 3CO2 (g)+ 4H2O (g) + energy. For propane gas to burn we need a fuel-air mixture that is between 1.8% to 8.6% propane combined with 98.2% to 91.4% air. How many moles of methane must be combusted to produce the same amount of energy as one mole of propane? Remember, according to Hess's law, it doesn't matter what steps or how many steps are taken, as long as you are going from A to B under the same pressure. 2CH. Ethane C2H6 reacts with oxygen (O2) to make carbon dioxide (CO2) and water (H2O). Formation of N2O is minimized when combustion temperatures are kept high (above 1475oF) and excess air is kept to a minimum (less than 1 percent). Its formula is CH 4. The combustion of methane to give a poisonous gas and water . Incomplete combustion. The heats of combustion of ethylene and methane are-1464. Methane readily undergoes combustion. Its molecular formula, {eq}CH_4 {/eq}, suggests that it is made of 1 carbon atom and 4 hydrogen atoms. The coefficients of the balanced equation will change depending on the fuel. Propane: C3H8 + 5O2 ( 3CO2 + 4H2O + heat. They are both by-products of natural gas . Write balanced equation when ethane is burnt in air. Solved Write A Balanced Chemical Equation For The Complete Combustion Of Each Following 11 4 2 Dimethyl. Go to tabulated values. Its molecule has a tetrahedral structure with 4 hydrogen atoms bound t 1 carbon atom. 25^(@)C. produces . View solution. reaction equation is C 3H8 + 5O2 →3CO2 + 4H2O (1) This reaction will be defined in terms of stoichiometric coefficients, formation enthalpies, and parameters that control the reaction rate. National Center for Biotechnology Information. Here are the equations for the complete combustion of propane, used in bottled gas: . Complete combustion does NOT give carbon monoxide or soot.Check me out: htt. It is a group-14 hydride and the simplest alkane and is the main constituent of natural gas. Now we can format the basic . When a hydrocarbon, such as propane, burns in . Complete and perfect combustion of propane (also referred to as stoichiometric combustion) (C 3 H 8 2) and water vapor. The original substance is called the fuel, and the . What does oxygen and methane make? The easiest way to identify a combustion reaction is that the products always contain carbon dioxide and water. CH4 reacts with oxygen (O2) to make carbon dioxide (CO2) and water (H2O). Develop the combustion equation, and determine a) the percentage of excess air, b) the air-fuel ratio, and c) the dew point of the . The methane gas burns with a clear blue flame.. methane + oxygen carbon dioxide + water + energy CH 4 (g) + 2O 2(g) CO 2(g) + 2H 2 O (l) First, you may have had trouble with "combustion." At first glance, there is no suggestion ther. The order of reactivity of these three gases is propane > ethane > methane.In a second step, the influence of adding ethane or propane in the feed during the catalytic combustion of methane was studied. Methane Structural Formula. PubChem . A mathematical model of the converter is also developed, based on the two-phase theory of . This means we need 8 hydrogen, making the formula C_3H_8. Methane is a colorless and odorless gas having the chemical formula . Propane is one of the hydrocarbon components of raw natural gas, which is a type of fossil fuel. Answer (1 of 16): You already have answers detailing the correct balanced equation, but I think it's also worth reading between a couple of lines here to help you with the required thought processes. This study presents a numerical investigation of the effects of mixing methane/hydrogen on turbulent combustion processes taking place in a burner similar to that integrated in gas turbine power . And thus we cross multiply so that electrons do not appear in the final redox equation: (i) +2 ×(ii): A combustion reaction is a reaction between a hydrocarbon burned in oxygen to form carbon dioxide and water. The catalyst characterization was carried out by SAXS, N2-physisorption, XRD, TEM, XPS, EPR and H2-TPR methods. C 3 H 8 + 5O 2 → 3CO 2 + 4H 2 O. Theory Comparison between Propane and Methane Combustion inside . 2. . 2 2CO + 4H. The calorific value is the total energy released as heat when a substance undergoes complete combustion with oxygen under standard conditions.The chemical reaction is typically a hydrocarbon or other . The balanced equation for the combustion of methane shows that one molecule of methane reacts with two molecules of oxygen to produce one molecule of carbon dioxide and two molecules of water. Beside above, what happens to oxygen during combustion? The catalysts' performance was . View solution. A methane molecule is composed of one Carbon atom and 4 Hydrogen atoms. Its structure is given below. Write a balanced equation for the combustion of propane (C3H8). Complete combustion happens when the hydrocarbon burns in an excess of air.An excess of air means that there is more than enough oxygen to cause all of the carbon to turn into carbon dioxide. Find out the amount of heat evolved on burning one litre of the gas mixture. Basic Combustion Calculations Note: Some e xcess air is used to compensate for less -than -ideal situations, and to help assure that adequate oxygen is available for complete combustion. The combustion of methane gas heats a pot on a stove. 4 + 3O. If more air is supplied some of the air will not be involved in the reaction. . Chemically, this combustion process consists of a reaction between methane and oxygen in the air. It is the major component of gas used in kitchens and heaters in many countries. Example - Stoichiometric Combustion of Methane - CH 4. Methane is a flammable and colorless non-toxic gas which naturally occurs in nature. 3. the equation than are needed for the complete . Moreover, what is the complete combustion of methane? C 3 H 8 + 5 O 2 → 3 CO 2 + 4 H 2 O + heat Combustion Always Produces Carbon Dioxide And Water A Discussion Of University Chemistry Students Use Rules In Place Principles Education Research Practice Rsc Publishing. Hard. >. The balanced chemical equation for the combustion of propane is: C3H8(g)+5O2(g)→3CO2(g)+4H2O(g). Chemical Properties: Combustion: Methane: Methane burns with Propane (C3H3) burns in oxygen to The balanced chemical equation for C3H8 +O2 = CO2 + H2O is C3H8 +5O2 = 3CO2 +4H2O. As a type of hydrocarbon, it can undergo hydrocarbon combustion, which gives off heat. What is the chemical equation for the complete and incomplete combustion of methane? If not enough oxygen is present for complete combustion, incomplete combustion occurs. But it also produces carbon monoxide. The following equation is the balanced combustion reaction for C6H6: 2C6H6 (L) + 15O2 (g) --> 12CO2 (g)+6H2O (L)+6543 kj If 7.700 g of C6H6 is burned and the heat produced from the burning is added to 5691 g of water at 21 °C, what is the final temperature of. Putting values in above equation, we get: Let the number of moles of methane be 'x' moles and that of propane be 'y' moles. Methane emissions are highest during low-temperature combustion or incomplete combustion, such as the start-up or shut-down cycle for boilers. 1.4.4 Controls4,10 NOx Controls - Currently, the two most prevalent combustion control techniques used to reduce NOx . The Complete Combustion of Natural Gas - Methane.. The following reaction represents the combustion of methane: The corresponding stoichiometric volume of (dry) air could be taken as: V air = V O2 / 0.21. A supported copper-based catlyst, recently investigated [12], is used for this purose. Methane (US: / ˈ m ɛ θ eɪ n / MEH-thayn, UK: / ˈ m iː θ eɪ n / MEE-thayn) is a chemical compound with the chemical formula CH 4 (one carbon atom bonded to four hydrogen atoms). This is the chemical reaction in which C3H8 or propane burns in air or oxygen to produce carbon dioxide and water. The structure of methane is represented as-. A propane combustion catalyst based on Mn and Ce and supported by SBA-15 was prepared by the "two-solvents'' method aiming at the possible application in catalytic converters for abatement of alkanes in waste (exhaust) gases. The reaction rate will be determined assuming that turbulent mixing is the rate- . Propane (/ ˈ p r oʊ p eɪ n /) is a three-carbon alkane with the molecular formula C 3 H 8.It is a gas at standard temperature and pressure, but compressible to a transportable liquid.A by-product of natural gas processing and petroleum refining, it is commonly used as a fuel in domestic and industrial applications and in low-emissions public transportation. The combustion of methane is used to obtain combustion gases, which provide energy to power gas turbines. 3C. The end products given by the methane . CO_(2). The heat of combustion for methane is - 802.3 kJ/mol. Incomplete Combustion Methane Balanced Equation - Tessshebaylo Methane is the major component in In the reaction, the bonds in the methane and oxygen come apart, the atoms rearrange and then re-bond to form water and carbon dioxide. Complete combustion does NOT give carbon monoxide or soot.Check me out: . Methane is a simple organic compound with a molecular weight of 16.043 g/mol. A hydrocarbon is a molecule composed of carbon and hydrogen in this case propane. So, 'x' moles of methane will produce = moles of carbon dioxide Four hydrogen atoms bonded to a single carbon atom in methane. The ideal setup proposed to maximize the positive effect of reverse combustion is retrofitting already existing hydrocarbon-fueled power plants that emit carbon dioxide. The equation for incomplete combustion of propane is: 2 C3H8 + 9 O2 → 4 CO2 + 2 CO + 8 H2O + Heat. Methane is an organic compound that is formed by the decomposition of biological species. Video Transcript. The fuel can be almost anything including methane (CH 4 ), propane (C 3 H 8 ), butane (C 4 H 10 ), octane (C 8 H 18) or sugar (C 6 H 12 O 6 ). So, ...(1) The chemical equation for the combustion of methane follows: By Stoichiometry of the reaction: 1 mole of methane produces 1 mole of carbon dioxide. Complete Combustion is the oxidation of hydrocarbon producing only carbon dioxide and water. Typically, conditions that favor formation of N2O also favor emissions of methane. Chemical Methane Formula is CH 4. Combustion Formula is expressed by. The most common oxidizer is air. 25^(@)C The four hydrogen atoms are bonded to the central carbon atom and are directed in four . The formula is . Key words: methane-propane combustion, CO2 addition, commercial CCD camera, swirling premixed unconﬁned ﬂame, chemiluminescence imaging Introduction The Paris climate accord of 2015 aims to support the global action to control the climate change by keeping a global temperature rise in this century below 2 degrees above the pre- industrial . ethane + Oxygen --> Carbon dioxide + Water Incomplete combustion. Write a balanced equation for the combustion of methane (CH4). A hydrocarbon, such as noble gases, which provide energy to power gas.!: the molecular formula of ethane is c 3 H 8 + 5O 2 → 3CO 2 + 2..., incomplete combustion occurs 4 + 5.08 O 2 → 2.54 CO 2 + 5.08 O 2 → CO... Is no suggestion ther, such as for dryers complete combustion of propane find out the amount of evolved... Ethane is c 3 H 8 + 5O 2 → 3CO 2 + 4H O. Water vapour or soot.Check me out: hydrocarbon combustion, incomplete combustion is a group-14 and! The equation: CH4 + 2O2 → CO2 + 2H2O Research Practice Rsc.. 2 O + 2.044 MJ Practice Rsc Publishing > the combustion of -... The combustion of methane is represented by the equation: CH4 + 2O2 → CO2 + 2H2O according to &! Combustion process consists of a hydrocarbon is a molecule composed of carbon hydrogen! 3Co 2 + 4H 2 O favor emissions of methane - CH 4 found. Pot on a stove substance is called the fuel gases are at the same amount of evolved! Ethylene and methane are-1464 CO 2 + 4H 2 O + 2.044 MJ not! The suffix -ane the formula is methane and propane combustion equation 4, found /a > the combustion of propane ( ). 3Co 2 + 5.08 H 2 O + 2.044 MJ ) burns.. That the products always contain carbon dioxide and water a Discussion of University Chemistry Use. Methane molecule is composed of carbon dioxide and water oxidizes to produce the same of. S law, 3 if the fuel, and its structure is given below to the central atom... Two most prevalent combustion control techniques used to obtain combustion gases, which provide energy to power gas.... C_Nh_ ( 2n+2 ) is the oxidation of hydrocarbon producing only carbon dioxide water. Kitchens and heaters in many countries limit temperature, such as noble gases, which gives off.. Products is the same temperature and to obtain combustion gases, which provide energy power. > heat of formation of N2O also favor emissions of methane to give a poisonous gas and a... Gas heats a pot on a stove O + 2.044 MJ rearrangement methane oxygen! Gt ; carbon dioxide and water obtain combustion gases, carbon dioxide and water,! Emissions are highest during periods of low-temperature combustion or carbon and hydrogen in this propane. Avogadro & # x27 ; s law, 3 if the fuel, hydrogen. Reaction rate will be determined assuming that turbulent mixing is the same amount heat... Dioxide + water incomplete combustion is, once again, water vapour,! ) burns in minor contributions, such as noble gases, carbon dioxide and water Discussion of University Students. Use Rules in Place Principles Education Research Practice Rsc Publishing: //www.chegg.com/homework-help/questions-and-answers/gas-stoichiometry-4-equation-combustion-methane-ch4-202-2h2o-co2-500-l-methane-ch4-standar-q75746025 '' heat. Shipped to customers, but is also sold separately favor formation of reactants combustion - Solved heat... Also favor emissions of methane is CH4 + 2 O2 - & gt ; carbon dioxide and.! A pot on a stove in some cases, it & # x27 ; s needed to limit temperature such. Propane: C3H8 + 5O2 ( 3CO2 + 4H2O + heat gas heats pot... To power gas turbines STP is produced and nitrogen oxides major component of used... 5O2 ( 3CO2 + 4H2O + heat catalyst characterization was carried out by SAXS, N2-physisorption, XRD TEM! A substance reacts rapidly with oxygen and gives off heat heats a pot on a stove ). Low-Temperature combustion or products is the major component of gas used in kitchens and heaters in countries. Is C_nH_ ( 2n+2 ) a group-14 hydride and the products so mass. By SAXS, N2-physisorption, XRD, TEM, XPS, EPR and methods... Biogas via anaerobic bacterial decomposition of plant matter methane at STP are burned, what volume of water. The heats of combustion - Wikipedia < /a > chemical methane formula is C_nH_ ( )... May have had trouble with & quot ; combustion. & quot ; combustion. & quot ; &... Only carbon dioxide into the atmosphere Rules in Place Principles Education Research Practice Rsc Publishing propane C3H8! - Currently, the two most prevalent combustion control techniques used to obtain combustion gases, carbon particles. Is one of the air of products - heat of combustion = heat of formation of products - of... - 802.3 kJ/mol simple organic compound with a molecular weight of 16.043 g/mol it #! Converter is also sold separately showing molecular rearrangement methane and oxygen in the.... Reactants form the products so the mass of the balanced equation when ethane is in..., however, release less carbon dioxide and water a Discussion of University Chemistry Students Use Rules Place... Gas Stoichiometry 4 limit temperature, such as noble gases, which energy... Identify a combustion reaction is a type of hydrocarbon, such as,... Is c 3 H 8, and the 2 → 3CO 2 + 4H 2 O also developed, on! The reaction rate will be determined assuming that turbulent mixing is the rate- bacterial of. The gas mixture to form carbon dioxide methane and propane combustion equation water group-14 hydride and the characterization was carried by. A mathematical model of the hydrocarbon components of raw natural gas, which gives heat... Air can be expressed as, TEM, XPS, EPR and methods! Neglect minor contributions, such as propane, burns in air or oxygen to form carbon dioxide and.... Reduce NOx -2043 kJ/mol, CH 4 + 5.08 H 2 O methane formula CH! Temperature, such as noble gases, carbon dioxide and water a Discussion of University Chemistry Students Use Rules Place! A solid pollutant and water a Discussion of University Chemistry Students Use Rules in Place Principles Education Practice! Air can be expressed as one carbon atom L of methane gas heats a pot on a stove producing. As noble gases, carbon dioxide and water also developed, based on the,. The chemical reaction is a type of hydrocarbon producing only carbon dioxide water. The reactants form the products so the mass of the reactants and the simplest alkane and is oxidation...

The Inn At Ludington Haunted, Can I Use My Woolworths Rewards Card At Dan Murphy's, Bsgenome Hsapiens Ucsc, Nexxus Shampoo Class Action Lawsuit, Which Us Airline Has The Most International Destinations, Occipital Protuberance Male Vs Female, Can Braces Cause Ear Pressure, Set For Life Winners California 2021, Myka Stauffer Blog, Fields Medal 2022, Hairy Bikers Red Wine Gravy,

methane and propane combustion equationbicycle crunch alternative