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Chemistry
Chemistry
Problem
Two elementary reactions are proposed. Reaction A:
O
+
O
3
⟶
2
O
2
\text{O} + \text{O}_3 \longrightarrow 2\,\text{O}_2
O
+
O
3
⟶
2
O
2
Reaction B:
NO
+
NO
+
O
2
⟶
2
NO
2
\text{NO} + \text{NO} + \text{O}_2 \longrightarrow 2\,\text{NO}_2
NO
+
NO
+
O
2
⟶
2
NO
2
Which reaction is termolecular, and briefly explain (one sentence) why such elementary steps are uncommon.
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