Calculate the enthalpy of combustion of methane gas at 1000K and 1atm.

Solutions

Expert Solution

The combustion reaction is:

Now, the enthalpy of the reaction is the difference between the enthalpy of the products and the enthalpy of the reactants.

Where is the formation enthalpy of the product (reactant) "n" and , are the stoichiometric coefficients.

From tables, we know:

So, at STP conditions:

Now, to calculate the enthaply at the temperature T :

From tables:

So:

queen_honey_blossom answered 1 year ago

Next > < Previous

Related Solutions

A. Do you think the enthalpy of a methane combustion is more or less negative than...

A. Do you think the enthalpy of a methane combustion is more or less negative than the enthalpy of a reaction for methanol combustion? Why? B. Do you think the enthalpy of an ethanol combustion is more or less negative than the enthalpy of a reaction for a methanol combution? Why?

Methane (CH4) gas flows into a combustion chamber at a rate of 200 L/min at 1.50...

Methane (CH4) gas flows into a combustion chamber at a rate of 200 L/min at 1.50 atm and ambient temperature. Air is added to the chamber at 1.00 atm and the same temperature, and the gases are ignited. a. To ensure complete combustion of CH4 to CO2(g) and H2O(g), three times as much oxygen as is necessary is reacted. Assuming air is 21 mole percent O2 and 79 mole percent N2, calculate the flow rate of air necessary to deliver...

Carbon Emissions from Natural Gas: Worldwide combustion of methane, CH4 (natural gas), provides about 10.9 ×...

Carbon Emissions from Natural Gas: Worldwide combustion of methane, CH4 (natural gas), provides about 10.9 × 1016 kJ of energy per year. If methane has an energy content of 39 × 103 kJ/m3 (at STP: Standard Temperature and Pressure), what mass of CO2 is emitted into the atmosphere each year? Also express that emission rate as metric tons of carbon (not CO2) per year. A metric ton, which is 1,000 kg is usually written as tonne to distinguish it from...

a) Calculate ΔG for the process below, the combustion of methane. Standard free energies of formation,...

a) Calculate ΔG for the process below, the combustion of methane. Standard free energies of formation, △G°, in kJ/mol, are given below each reactant and product in the process shown below. CH4(g) + O2(g) → CO2(g) + H2O(g) (not balanced!) – 50.8 – 394.4 – 228.6 b) Coal gasification can be represented by the balanced equation: 2 C(s) + 2 H2O(g) → CH4(g) + CO2(g) Using the free energies from part a), calculate ΔG for this reaction. c) Write the...

Calculate the enthalpy change for the reaction below given the standard heat of combustion for ammonia,...

Calculate the enthalpy change for the reaction below given the standard heat of combustion for ammonia, NH3, is -226 kJ/mol. 4NH3 (g) + 5O2(g) --> 4NO(g) + 6H2O(g)

methane gas CH4 enters a steady flow combustion chamber at 25 oC and 1 atm and...

methane gas CH4 enters a steady flow combustion chamber at 25 oC and 1 atm and is burned with 40 percent excess air, which also enters at 25 oC and 1 atm. After combustion, the products are allowed to cool to 25 oC. Assume complete combustion, determine the heat transfer per kmol of CH4

A gas of nitrogen molecules is at a temperature of 1000K. In this case molecule has...

A gas of nitrogen molecules is at a temperature of 1000K. In this case molecule has 3 translational, 2 rotational, and 2 vibrational degrees of freedom per molecule, i.e. a total of 7. 1.9. [1pt] Assuming the cycle operates as an engine, calculate the engine efficiency. ANSWER 1.10. [1pt] If you are to build the most efficient engine using the highest and the lowest temperatures available from #9 how would the cycle look like on a PV-diagram [you need to...

Heat of Combustion and Enthalpy The heat of combustion of hexane is 45.6 kj/g. If you...

Heat of Combustion and Enthalpy The heat of combustion of hexane is 45.6 kj/g. If you burn all of a 1.20 g sample of hexane, and all of the heat is transferred to a pot of water determine the following: (a)The amount of heat in J, and the sign of the energy change (b)The amount of heat absorbed in water: (c) The final temperature of water if there are 250 g of water in the pot, and the intial water...

PLEASE ANSWER ALL 1. Calculate the molar enthalpy of combustion at 25?C and 1 bar pressure...

PLEASE ANSWER ALL 1. Calculate the molar enthalpy of combustion at 25?C and 1 bar pressure of a gas of volumetric analysis 12% H2, 29% CO, 2.6% CH4, 0.4% C2H4, 4% CO2, and 52% N2 for the H2O in the vapour phase and in the liquid phase. ANSWER (- 137 240 kJ/kmol; - 145 158 kJ/kmol) 2. A gaseous fuel has the following volumetric composition: CH4 0.38, H2 0.26, N2 0.06, CO 0.26, CO2 0.04. Find the stoichiometric air/fuel ratio...

calculate the partial pressure of CO2 over calcium carbonate at 1000K

Subjects