JEE Main 2023 · ChemistryNumerical answerNumerical valueMediumCalculation

JEE Main 6 April 2023, Shift 1, Chemistry Q84

Question 84 of 90 in this shift, Chemistry question 24 of 30, Section B.

The value of log K for the reaction

\mathrm{A \rightleftharpoons B}

at 298 K is ________. (Nearest integer) Given:

\Delta H^\circ = -54.07

kJ mol

^{-1}

\Delta S^\circ = 10

J K

^{-1}

mol

^{-1}

(Take

2.303\times8.314\times298 = 5705

)

Official answer

NTA final key.

Chapter: Thermodynamics (Chemistry)
Topic: Gibbs Free Energy
Idea tested: Gibbs Energy and Equil

Same idea in other shifts

Asked 5× in all

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Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 42 of the 174 JEE Main shifts held from 2017 to 2026.