Chemistry - Thermodynamics - II Question with Solution | TestHub

ChemistryThermodynamics - IIAdiabatic Process/PolytropicMedium2 minPYQ_2020
ChemistryMediumsingle choice

The value of log 10  K for a reactionA→Bis
(Given∆Hr 298 Ko=-54.07 kJ mol-1,
∆Sr 298 Ko=10 JK-1mol-1and
R=8.314 JK-1mol-1, 2.303×8.314×298=5705)

Options:

Answer:
B
Solution:

For the equilibrium,A→B
ΔG o  =  ΔH o − TΔS o
ΔG o =−2.303 RT  log 10  K ( K is equilibrium constant)
−2.303 RT  log 10  K=  ΔH o − TΔS o
2.303 RT  log 10  K =  TΔS o − ΔH o
log10⁡K=T∆So-∆Ho2.303 RT=298×10+54.07×10002.303×8.314×298=10
Hence (B)is correct option.

Stream:NTA_ABHYASSubject:ChemistryTopic:Thermodynamics - IISubtopic:Adiabatic Process/Polytropic
⏱ 2mℹ️ Source: PYQ_2020

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