At the transition temperature T , A rightleftharpoons B and Δ G 0 =105-35 log T where A and B are two states of substance X . The transition temperature in ° C when pressure is 1 atm is \ \ \ \ . (Nearest integer)

Chemistry · Thermodynamics & Thermochemistry

JEE Main 2026 — 2 April, Morning Shift — Question 60

At the transition temperature $\mathrm{T}, \mathrm{A} \rightleftharpoons \mathrm{B}$ and $\Delta \mathrm{G}^{0}=105-35 \log \mathrm{~T}$ where A and B are two states of substance X . The transition temperature in ${ }^{\circ} \mathrm{C}$ when pressure is 1 atm is $\_\_\_\_$ . (Nearest integer)

Answer: 727

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Step-by-step solution

$\quad \Delta \mathrm{G}^{\circ}=0$ (eqm. at standard pressure) $105-35 \log \mathrm{~T}=0$ $\log \mathrm{T}=3$ $\mathrm{T}=1000 \mathrm{~K}$ $\mathrm{T}=727^{\circ} \mathrm{C}$

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Exam: JEE Main 2026
Paper: 2 April, Morning Shift
Subject: Chemistry
Chapter: Thermodynamics & Thermochemistry
Topic: Gibbs Free Energy - Relation with Equilibrium, Metallurgy and Electrochemistry

Consider the following data (i) 2 Al( s)+6 HCl( aq) arrow Al 2 Cl 6( aq)+3 H 2( g)+ 1200 kJ / mol . (ii) H 2( g)+ Cl 2( g) arrow 2 HCl(…

Answer: 727

Step-by-step solution

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