For the chemical reaction

Question:

For the chemical reaction $\mathrm{X} \rightleftharpoons \mathrm{Y}$, the standard reaction Gibbs energy depends on temperature $\mathrm{T}$ (in $\mathrm{K}$ ) as :

$\Delta_{\mathrm{r}} \mathrm{G}^{\circ}\left(\right.$ in $\left.\mathrm{kJ} \mathrm{mol}^{-1}\right)=120-\frac{3}{8} \mathrm{~T}$

The major component of the reaction mixture at $T$ is :

  1. $\mathrm{X}$ if $\mathrm{T}=315 \mathrm{~K}$

  2. $\mathrm{X}$ if $\mathrm{T}=350 \mathrm{~K}$

  3. $\mathrm{Y}$ if $\mathrm{T}=300 \mathrm{~K}$

  4. $\mathrm{Y}$ if $\mathrm{T}=280 \mathrm{~K}$


Correct Option: 1

Solution:

$\mathrm{X}$ if $\mathrm{T}=315 \mathrm{~K}$

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