The entropy values (in $JK^{- 1}\ mol^{- 1}$) of $H_{2}(g) = 130.6\ Cl_{2}(g) = 223.0$ and $HCl(g) = 186.7\ J\ mol^{- 1}K^{- 1}$ at 298 K and 1 atm pressure, the entropy change for the reaction $H_{2}(g) + Cl_{2}(g) \rightarrow 2HCl(g)$ is

Question

Dr. Abubacker · Accepted Answer

(d)
$\mathrm{\Delta}S^{o} = 2S_{HCl}^{o} - (S_{H_{2}}^{o} + S_{Cl_{2}}^{o})$
$= 2 	imes 186.7 - (130.6 + 223.0) = 19.8\ JK^{- 1}mol^{- 1}$

Q. The entropy values (in $JK^{- 1}\ mol^{- 1}$) of $H_{2}(g) = 130.6\ Cl_{2}(g) = 223.0$ and $HCl(g) = 186.7\ J\ mol^{- 1}K^{- 1}$ at 298 K and 1 atm pressure, the entropy change for the reaction $H_{2}(g) + Cl_{2}(g) \rightarrow 2HCl(g)$ is

Explanation

Reviewed by Dr. Abubacker

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