Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
BITSAT 2022
Exam
BITSAT
Year
2022
Subject
Chemistry
Chapter
Chemical Equilibrium

BITSAT 2022 · Chemistry · Chemical Equilibrium

For an isomerisation reaction A leftharpoons B , the temperature...

For an isomerisation reaction A⇌BA \rightleftharpoons B, the temperature dependence of equilibrium constant is given by log⁡eK=4.0−2000T\log _e K=4.0-\frac{2000}{T} The value of ΔS∘\Delta S^{{}^{\circ}} at Hook is, therefore

Options

  1. A4R4 R
  2. B5R5 R
  3. C400R400 R
  4. D2000R2000 R

Correct answer

A. 4R4 R

Step-by-step solution

van't Hoff equation giving variation of equilibrium constant, KK with temperature TT is log⁡eK=−ΔH∘RT+ΔS∘R\log _e K=-\frac{\Delta H^{{}^{\circ}}}{R T}+\frac{\Delta S^{{}^{\circ}}}{R} Given, log⁡eK=−2000T+4.0∴ΔS∘/R=4⇒ΔS∘=4R\quad \log _e K=-\frac{2000}{T}+4.0\therefore \quad \Delta S^{{}^{\circ}} / R=4 \Rightarrow \Delta S^{{}^{\circ}}=4 R
Practice Chemical Equilibrium on Quantrex Academy →

More from Chemical Equilibrium

Le-Chateliers' principle is not applicable to BITSAT 2024The ratio (K_P)/(K_C) for the reaction CO_ (g) +(1)/(2) O_ 2( g) leftharpoons CO_ 2( g)… BITSAT 2024PCl_ 5 is dissociating 50 \% at 250^ ^ ∘ C at a total pressure of P atm. If equilibrium… BITSAT 2021The ratio K_ p K_ c for the reaction CO(g)+(1)/(2) O_ 2 (g) leftharpoons CO_ 2 (g) is: BITSAT 20204 moles of A are mixed with 4 moles of B . At equilibrium for the reaction A + B ⇌ C + D… BITSAT 2019An equilibrium mixture at 300K contains N _ 2 O _ 4 and NO _ 2 at 0. 28 and 1. 1atm… BITSAT 2018The degree of dissociation of PCl_ 5 (α) obeying the equilibrium PCl_ 5 leftharpoons PCl_… BITSAT 2016In a closed system, A(s) leftharpoons 2 B( g)+3 C(g) , if partial pressure of C is… BITSAT 2016 Full Chemical Equilibrium list All BITSAT PYQs