The change in entropy is negative for which o | vedclass

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(C) Entropy $(S)$ is a measure of the randomness or disorder of a system. For a process,$\Delta S < 0$ implies a decrease in randomness or disorder. $

Vedclass · Accepted Answer

$N_{2(g, 1 \, atm)} \rightarrow N_{2(g, 10 \, atm)}$

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(C) Entropy $(S)$ is a measure of the randomness or disorder of a system. For a process,$\Delta S $(A)$ $Br_{2(l)} \rightarrow Br_{2(g)}$: Liquid to gas transition increases disorder,so $\Delta S > 0$. $(B)$ $C_{(s)} + H_2O_{(g)} \rightarrow CO_{(g)} + H_{2(g)}$: The number of moles of gas increases $(1 \rightarrow 2)$,so $\Delta S > 0$. $(C)$ $N_{2(g, 1 \, atm)} \rightarrow N_{2(g, 10 \, atm)}$: Compression of gas decreases the volume available for molecules,leading to a decrease in randomness,so $\Delta S $(D)$ $Fe_{(400 \, K)} \rightarrow Fe_{(300 \, K)}$: Cooling a substance decreases the kinetic energy and vibrational motion of particles,leading to a decrease in entropy,so $\Delta S Note: Both $(C)$ and $(D)$ involve a decrease in entropy. However,in standard textbook contexts for this specific question,the compression of gas $(C)$ is the classic example of negative entropy change due to volume reduction.

The change in entropy is negative for which of the following processes?

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