Observe the following reactions I. $\quad \mathrm{CaCO}_3(\mathrm{~s}) \rightarrow…

Observe the following reactions I. $\quad \mathrm{CaCO}_3(\mathrm{~s}) \rightarrow \mathrm{CaO}(\mathrm{s})+\mathrm{CO}_2(\mathrm{~g})$ II. $\quad \mathrm{Cl}_2(\mathrm{~g}) \rightarrow 2 \mathrm{Cl}(\mathrm{g})$ III. $\mathrm{H}_2 \mathrm{O}(1) \rightarrow \mathrm{H}_2 \mathrm{O}(\mathrm{s})$
Identify the reactions in which entropy increases
  1. I, II, III
  2. I, II Only
  3. I, III Only
  4. II, III Only

Solution

When the number of gaseous atom increases entropy is increases. So in reaction I and II gaseous molecule produced so entropy increase.

Asked in: AP EAMCET 2024 (23 May Shift 1)

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