Question
Explain the following observations giving appropriate reason:
Ozone is thermodynamically unstable with respect to oxygen.
Ozone is thermodynamically unstable with respect to oxygen.
✓
Answer
$2O_3(g) → 3O_2(g)$
Ozone is thermodynamically unstable with respect to oxygen as its decomposition into oxygen results in the liberation of heat $(\triangle \text{H}=-\text{ve})$ and increase in entropy $(\triangle\text{S} =+\text{ve}).$ These two factors reinforce each other, resulting in large $-\text{ve}\triangle \text{G}(=\triangle \text{H}-\text{T}\triangle \text{S})$ for its conversion into oxygen.
Ozone is thermodynamically unstable with respect to oxygen as its decomposition into oxygen results in the liberation of heat $(\triangle \text{H}=-\text{ve})$ and increase in entropy $(\triangle\text{S} =+\text{ve}).$ These two factors reinforce each other, resulting in large $-\text{ve}\triangle \text{G}(=\triangle \text{H}-\text{T}\triangle \text{S})$ for its conversion into oxygen.
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