What amount of heat will be released during the combustion of 5.6 liters of methane if the heat effect of the reaction is 892 kJ?

Given:
V (CH4) = 5.6 L
Q = 892 kJ

To find:
Q1 -?

1) Write the equation of the thermochemical reaction:
CH4 + 2O2 => CO2 + 2H2O + 892 kJ;
2) Calculate the amount of methane substance:
n (CH4) = V (CH4) / Vm = 5.6 / 22.4 = 0.25 mol;
3) Calculate the amount of heat that will be released during the reaction by making a proportion and solving it:
1 mol CH4 – 892 kJ;
0.25 mol CH4 – Q1 kJ;
Q1 = 0.25 * 892/1 = 223 kJ.

Answer: The amount of heat released is 223 kJ.