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The reactions :2CO(g)=O(2)9g)rarr 2CO(2)...

The reactions `:2CO(g)=O_(2)9g)rarr 2CO_(2)(g)` and `2NO(g)+O_(2)(g) rarr 2NO_(2)(g)` look to be similar. Yet the former is slower than latter at same temperature. Why ?

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