The reactions 2NO+O2⟶2NO2 ; 2CO+O2⟶2CO2 look to be identical, yet thefirst is faster than the second. The reason is that

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The reactions $2 NO + O_{2} ⟶ 2 {NO}_{2}$ ; $2 CO + O_{2} ⟶ 2 {CO}_{2}$ look to be identical, yet the
first is faster than the second. The reason is that

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The first reaction has lower internal energy change than the second

The first reaction has lower enthalpy change than the second

The first reaction has lower activation energy than the second

The first reaction has higher activation energy than the second

answer is C.

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Detailed Solution

when the activation energy of a reaction is less, it requires less energy to activate and hence faster reaction. so the activation energy of first is lower than second.

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