AIPMT PRELIMS2005Chemistry-Thermodynamics
AIPMT PRELIMS 2005 Chemistry Spontaneity of Reactions MCQ Question
Type: MCQ-conceptual-Medium-Class 11
A reaction occurs spontaneously if:
A
TΔS < ΔH and both ΔH and ΔS are +ve
B
TΔS > ΔH and both ΔH and ΔS are +ve
C
TΔS = ΔH and both ΔH and ΔS are +ve
D
TΔS > ΔH and ΔH is +ve and ΔS is -ve
Correct Answer
Option B
Detailed Explanation
A reaction is spontaneous when the Gibbs free energy change (ΔG = ΔH - TΔS) is negative. This occurs when TΔS > ΔH.
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