Chemistry · Thermodynamics & Thermochemistry

JEE Main 2025 — 2 April, Evening Shift — Question 13

Which of the following graphs correctly represents the variation of thermodynamic properties of Haber's process?

Answer: C

$\mathrm{N}_{2}(\mathrm{~g})+3 \mathrm{H}_{2}(\mathrm{~g}) \rightleftharpoons 2 \mathrm{NH}_{3}(\mathrm{~g})$

$\Delta \mathrm{S}_{\mathrm{r}}=-\mathrm{ve}$

$\Delta \mathrm{H}_{\mathrm{r}}=-\mathrm{ve}$

$\frac{-\Delta H_{r}^{\circ}}{T} \Rightarrow$ first decreases then constant

$\frac{-\Delta G_{R}^{\circ}}{T} \Rightarrow$ first decreases then constant

Answer key and solution verified before publishing.

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