Question:medium
Which of the following reactions exhibits decrease in entropy?
Which of the following reactions exhibits decrease in entropy?
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Count gas moles: Fewer gas moles in products $\rightarrow$ Decrease in Entropy.
Updated On: May 12, 2026
- $2\text{H}_2\text{O}_{2(l)} \longrightarrow 2\text{H}_2\text{O}_{(l)} + \text{O}_{2(g)}$
- $\text{H}_{2(g)} \longrightarrow 2\text{H}_{(g)}$
- $\text{CaCO}_{3(s)} \xrightarrow{\Delta} \text{CaO}_{(s)} + \text{CO}_{2(g)}$
- $2\text{H}_{2(g)} + \text{O}_{2(g)} \longrightarrow 2\text{H}_2\text{O}_{(l)}$
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The Correct Option is D
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