Calculate the heat of reaction at 77 C for if the heat of reaction at 27 C is -22.1 kcal. The molar heat capacities () at 27 C for , , and are 6.82, 7.70, and 6.80 cal/K-mol respectively.

Question

Calculate the heat of reaction at 77 C for $0.5H_2(g) + 0.5Cl_2(g) \rightarrow HCl(g)$ if the heat of reaction at 27 C is -22.1 kcal. The molar heat capacities ($C_p$) at 27 C for $H_2$, $Cl_2$, and $HCl$ are 6.82, 7.70, and 6.80 cal/K-mol respectively.

Prashant Kotian · Accepted Answer

Correct answer: A. According to Kirchhoff's equation, . . . .

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