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For which of the following reactions, De...

For which of the following reactions, `DeltaH` is equal to `DeltaU` ?

A

` N_2(g) +3H_2(g) to 2NH_3(g) `

B

` 2Hl (g) to H_2(g) +I_2(g)`

C

` 2NO_2(g) to N_2O_4(g)`

D

` 2SO_2+O_2 (g) to 2SO_3(g)`

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The correct Answer is:
A
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