Chemical Thermodynamics Question 186

Question: Heat of combustion ΔH of CH4,,C2H6,,C2H4 and C2H2 gases are - 212.8, - 373.0, - 337.0 and - 310.5 kcal respectively at the same temperature. The best fuel among these gases is

Options:

A) CH4

B) C2H6

C) C2H4

D) C2H2

Show Answer

Answer:

Correct Answer: A

Solution:

CH4 is the best fuel because its calorific value =−212.816=−13.3,kcal,/,g is higher among the other gases.

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