Answer: The correct answer is Option c.
Explanation:
Order of the reaction is defined as the sum of the concentration of terms on which the rate of the reaction actually depends. It is the sum of the exponents of the molar concentration in the rate law expression.
For the general reaction:
[tex]aA+bB\rightarrow cC[/tex]
Rate law expression for the reaction:
[tex]\text{Rate}=k[A]^a[B]^b[/tex]
where,
a = order with respect to A
b = order with respect to B
For the given chemical reaction:
[tex]2NO(g)+2H_2(g)\rightarrow N_2(g)+2H_2O(g)[/tex]
Rate law expression for the above reaction follows:
[tex]\text{Rate}=k[NO]^2[H_2][/tex]
where,
Order with respect to nitric oxide is 2
Order with respect to hydrogen is 1
Hence, the correct answer is Option c.
