Chemistry - Thermodynamics - I Question with Solution | TestHub

ChemistryThermodynamics - IFirst law of ThermodynamicsEasy2 minPYQ_2020
ChemistryEasysingle choice

If an endothermic reaction is non-spontaneous at freezing of water and becomes feasible at its boiling point, then

Options:

Answer:
B
Solution:

ΔG=ΔH-TΔS, sinceΔG=+veatT=273K andΔH=+veand at high temperature 373 K, it becomes spontaneous(ΔG=-ve)even ifΔH=+ve. This is possible only, ifΔS=+vebecause at high temperatureTΔS>ΔHto giveΔG=-ve.

Stream:NTA_ABHYAS_NEETSubject:ChemistryTopic:Thermodynamics - ISubtopic:First law of Thermodynamics
⏱ 2mℹ️ Source: PYQ_2020

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