Chemistry · 2019
JEE Main · 11 January 2019, Shift 1 · Q54
For the chemical reaction X ⇌ Y, the standard reaction Gibbs energy depends on temperature T (in K) as Δ_r G^°( in kJ mol^-1)=120-3/8 T. The major…
For the chemical reaction $\displaystyle \mathrm{X} \rightleftharpoons \mathrm{Y}$, the standard reaction Gibbs energy depends on temperature T (in K) as
$$\Delta_{\mathbf{r}} G^{\circ}\left(\text { in } \mathrm{kJ} \mathrm{~mol}^{-1}\right)=120-\frac{3}{8} \mathrm{~T} .
$$
The major component of the reaction mixture at T is :
Official answer
(3)
$\displaystyle \mathrm{X} \text { if } \mathrm{T}=315 \mathrm{~K}$
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JEE Main 2019 Chemistry question, with the answer from NTA’s final answer key. Where our answers come from.