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Q.

At room temperature, the reaction between NO and O2 to give NO2 is fast, while that between COand O2 is slow. It is due to:

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a

CO is poisonous

b

CO is smaller in size that of NO

c

none of the above

d

the activation energy for the reaction, 2NO+O22NO2 is less than 2CO+O22CO2

answer is C.

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Detailed Solution

Compared to the interaction between CO and oxygen, the reaction between NO and oxygen has a lower activation energy.
As a result, the interaction between oxygen and NO is quick, whereas the reaction between oxygen and CO is long.

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