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Chemistry · 2026

JEE Main · 21 January 2026, Shift 1 · Q55

For the reaction, N_2 O_4 ⇌ 2 NO_2, graph is plotted as shown below. Identify correct statements. A. Standard free energy change for the reaction is…

For the reaction, $\displaystyle \mathrm{N}_2 \mathrm{O}_4 \rightleftharpoons 2 \mathrm{NO}_2$, graph is plotted as shown below. Identify correct statements. A. Standard free energy change for the reaction is $\displaystyle -5.40 \mathrm{~kJ} \mathrm{~mol}^{-1}$. B. As $\displaystyle \Delta \mathrm{G}^{\ominus}$ in graph is positive, $\displaystyle \mathrm{N}_2 \mathrm{O}_4$ will not dissociate into $\displaystyle \mathrm{NO}_2$ at all. C. Reverse reaction will go to completion. D. When $\displaystyle 1$ mole of $\displaystyle \mathrm{N}_2 \mathrm{O}_4$ changes into equilibrium mixture, value of $\displaystyle \Delta \mathrm{G}^{\ominus}=-0.84 \mathrm{~kJ} \mathrm{~mol}^{-1}$ E. When $\displaystyle 2$ mole of $\displaystyle \mathrm{NO}_2$ changes into equilibrium mixture, $\displaystyle \Delta \mathrm{G}^{\ominus}$ for equilibrium mixture is $\displaystyle -6.24 \mathrm{~kJ} \mathrm{~mol}^{-1}$. Figure: JEE Main Chemistry 2026, Chemical Thermodynamics Choose the correct answer from the options given below :
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JEE Main 2026 Chemistry question, with the answer from NTA’s final answer key. Where our answers come from.