Which of the following statements about entropy and chemical reactions is false?

ID: 517867 • Letter: W

Question

A) The greater the number of microstates of a system, the higher the entropy for that system.

B) All other parameters being equal, a molecule of higher molar mass will have more entropy compared to a molecule of lower molar mass.

C) The entropy of a substance in the gas state is much higher than entropies for the substance in the liquid or solid state.

D) An endothermic reaction can be spontaneous as long as there is an increase in entropy in the formation of products.

E) An exothermic reaction can be non-spontaneous if there is an increase in entropy in the formation of products.

A) True

Entropy (S) = k ln W

W is signify the number of microstates. So, as the number of microstates greater the entropy is higher.

B) True.

C) True

Because the particles in gases state is more random than solid or liquid.

D) False

Because an endothermic process decreases the entropy of the formation of products.

E) False

Because an exothermic reaction increases the entropy of the formation of products and hence it is spontaneous.

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