The heat of formation of methane at constant pressure is 18.5 kcal at 25 c. The heat at constant volume would be
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Answer:
The correct option is D)
Explanation:
The heat of formation at constant pressure is ΔH and that at constant volume is ΔE.
Using the below relation:
ΔH=ΔE+ΔnRT
Δn for the above reaction is −1.
⟹ΔE=ΔH+RT {∵Δn=−1}
⟹ΔE=18500+1.98×298
⟹ΔE=19090 cal
Hence, Option "D" is the correct answer.
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