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premedchemist

A reaction will occur spontaneously if it increases the entropy, or disorder, of the system. The correct answer is D.

Answer: Option (d) is the correct answer.

Explanation:

A spontaneous change is defined as the change which occurs on its own and does not require any external force or influence for its occurrence.

A spontaneous change will lead to increase in disorder of the species involved.

As entropy is the degree of randomness present within the molecules of a substance.

Therefore, a spontaneous change will lead to increase in entropy.

Thus, we can conclude that spontaneous changes always increase disorder.

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