Q.

For the combustion reaction at 298 K,H2(g)+12O2(g)→H2O                 . . . .(1)Which of the following alternative(s) is/are correct?

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a

ΔH=ΔE

b

ΔH>ΔE

c

ΔH<ΔE

d

ΔH and ΔE has no relation with each other.

answer is C.

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Detailed Solution

Δn=−1/2−1=−3/2 Since, Δn<0∴ ΔH is <ΔE
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