For which of the following reactions,Delta H | vedclass

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(B) The relationship between enthalpy change $(\Delta H)$ and internal energy change $(\Delta U)$ is given by the equation: $\Delta H = \Delta U   \De

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$2HI_{(g)} 	o H_{2(g)} + I_{2(g)}$

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(B) The relationship between enthalpy change $(\Delta H)$ and internal energy change $(\Delta U)$ is given by the equation: $\Delta H = \Delta U   \Delta n_g RT$.For $\Delta H$ to be equal to $\Delta U$,the term $\Delta n_g$ must be $0$.$\Delta n_g$ is the difference between the sum of stoichiometric coefficients of gaseous products and gaseous reactants.For option $B$: $2HI_{(g)} 	o H_{2(g)}   I_{2(g)}$,$\Delta n_g = (1   1) - 2 = 0$.Since $\Delta n_g = 0$,$\Delta H = \Delta U   0$,which means $\Delta H = \Delta U$.

For which of the following reactions,$\Delta H$ is equal to $\Delta U$ ?

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