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2 November, 19:35

Which of the following statements is TRUE?

A. Endothermic processes decrease the entropy of the surroundings, at constant T and P.

B. Endothermic processes are never spontaneous.

C. Entropy is not a state function.

D. Exothermic processes are always spontaneous.

E. None of the above are true.

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Answers (1)
  1. 2 November, 19:44
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    Answer: Option (A) is the correct answer.

    Explanation:

    Entropy means the degree of randomness present within the molecules of a substance.

    And, in an endothermic process heat is absorbed by the reactant molecules. So, when heat is absorbed from the surroundings then there occurs a decrease in heat energy of the surrounding.

    As a result, kinetic energy of surrounding elements decreases due to which there is also decrease in the entropy of surroundings.

    As spontaneous process is a process that occurs on its own. So, it can be endothermic or exothermic in nature.

    A state function is defined as a function that depends on the initial and final states.

    Thus, we can conclude that the statement endothermic processes decrease the entropy of the surroundings, at constant T and P, is true.
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