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Q.

For which of the following reaction $ΔH$ is equal $ΔU$

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a

$2 {NO}_{(g)} \to N_{2} {O_{4}}_{(g)}$

b

${N_{2}}_{(g)} + 3 {H_{2}}_{(g)} \to 2 {NH}_{3}_{(g)}$

c

$2 {SO}_{2}_{(g)} + O_{2 (g)} \to 2 {SO}_{3}_{(g)}$

d

$2 {HI}_{(g)} \to {H_{2}}_{(g)} + {I_{2}}_{(g)}$

answer is B.

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Detailed Solution

$ΔH = ΔU + ΔngRT$

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