5. Thermodynamics and thermochemistry Chemistry - 5. Thermodynamics and thermochemistry

$A$. A liquid evaporates to vapour.

$B$. Temperature of a crystalline solid lowered from $130 \mathrm{~K}$ to $0 \mathrm{~K}$.

$C$. $2 \mathrm{NaHCO}_{3(\mathrm{~s})} \rightarrow \mathrm{Na}_2 \mathrm{CO}_{3(\mathrm{~s})}+\mathrm{CO}_{2(\mathrm{~g})}+\mathrm{H}_2 \mathrm{O}_{(\mathrm{g})}$

$D$. $\mathrm{Cl}_{2(g)} \rightarrow 2 \mathrm{Cl}_{(g)}$

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(Given $R=2.0 \mathrm{cal} \mathrm{K}^{-1} \mathrm{~mol}^{-1}$ )

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Assertion $A:$ In equation $\Delta_r G =- nFE _{\text {cell }}$ value of $\Delta_r G$ depends on $n$.

Reasons $R$ : $E_{\text {cell }}$ is an intensive property and $\Delta_{ r } G$ is an extensive property.

In the light of the above statements, choose the correct answer from the options given below