Question

Part A

Determine the mass of CO2 produced by burning enough of methane to produce 2.25×102kJ of heat.
CH4(g)+2O2(g)→CO2(g)+2H2O(g)ΔH∘rxn=−802.3kJ

Express your answer using three significant figures.

Part B

Determine the mass of CO2 produced by burning enough of propane to produce 2.25×102kJ of heat.
C3H8(g)+5O2(g)→3CO2(g)+4H2O(g)ΔH∘rxn=−2217kJ

Express your answer using three significant figures.

Part C

Determine the mass of CO2 produced by burning enough of octane to produce 2.25×102kJ of heat.
C8H18(l)+25/2O2(g)→8CO2(g)+9H2O(g)ΔH∘rxn=−5074.1kJ

Express your answer using three significant figures.

Part D

Which fuel contributes least to global warming per kJ of heat produced?

propane

methane

octane

Answer 1

Solution:- According to the given data

1) The reaction is as follows

Here, 1 mole of.. is produced from 1 mole of...

In this process the amount of heat .. is released for the 1 mole of....

Here calculate the mass of CO₂ is produced.

Here calculate the mass of  CO₂ produced to release

ii) The reaction is as follows

Here, 3 mole of CO₂ produced from 1 mole....

Tn this process the amount of heat 2217 kj released for 3 mole of CO₂ is produced.

In this process the amount of heat 5074.1 KJ is released for 8 mole .....