Chemistry - Thermodynamics - II Question with Solution | TestHub

ChemistryThermodynamics - IICalculation of DSHard2 minPYQ_2018
ChemistryHardmultiple choice

For a reaction, A⇌P , the plots of  Aand P with time at temperatures T1 and T2 are given below.

If T2>T1 , the correct statement(s) is (are)
(Assume ∆H⊝ and ∆S⊝ are independent of temperature and ratio of lnK at T1 to lnK at T2 is greater than T2/T1 . Here H, S , G and K are enthalpy, entropy, Gibbs energy and equilibrium constant, respectively.)

Options:(select one or more)

Answer:
A, C
Solution:

A⇌P
Given T2>T1
ln⁡K1ln⁡K2>T2T1

⇒ -∆G10>-∆G20
⇒  -∆H0+T1∆S0>-∆H0+T2∆So
⇒  T1∆S0>T2∆S0
⇒   ∆So<0

At T2 temperature concentration of product is decreases that shows reaction is exothermic.

Stream:JEE_ADVSubject:ChemistryTopic:Thermodynamics - IISubtopic:Calculation of DS
⏱ 2mℹ️ Source: PYQ_2018

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