For 2 H₂O(l) → 2 H₂(g) + O₂(g), ΔS is

Positive (liquid → more gas moles) Producing gas from liquid increases disorder → ΔS 0.

Positive (liquid → more gas moles)

Absolute Entropy and Entropy Change

AP Chemistry· difficulty 2/5

For 2 H₂O(l) \to 2 H₂(g) + O₂(g), ΔS is

Explanation

Producing gas from liquid increases disorder \to ΔS > 0.

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