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Question

Statement 1: A spontaneous reaction is always exothermic.
Statement 2: Exothermic reactions release energy from the system.

A
Statement 1 and Statement 2 are correct and Statement 2 is the correct explanation of Statement 1
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B
Both the Statement 1 and Statement 2 are correct and Statement 2 is not the correct explanation of Statement 1.
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C
Statement 1 is correct but Statement 2 is not correct.
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D
Statement 1 is not correct but Statement 2 is correct.
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E
Both the Statement 1 and Statement 2 are not correct.
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Solution

The correct option is E Statement 1 is not correct but Statement 2 is correct.

All Spontaneous processes are not exothermic because it is Gibbs free energy that determines spontaneity, not the enthalpy.

A process is spontaneous even if the Gibbs free energy is negative.

ΔG = ΔH - TΔS

It is true that Exothermic reactions release energy from the system.


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