Question

For a reversible reaction, $\Delta S$ system $+\Delta S$ surrounding is:

• A. $\infty$
• B. Zero
• C. $1$
• D. $2$

Answer 1

Answer: (B)

Zero

In a reversible process, the total change in entropy is always 0. If the change in entropy of system increases, the change in entropy of surroundings will decrease so as to keep the total change in entropy as 0.

For a reversible reaction, $\Delta S_{system}+\Delta S_{surrounding}=0$.

Hence, option B is correct.