Problem: For the reaction of chlorine and nitric oxide,  2NO(g) + Cl2(g) → 2NOCl(g) doubling the concentration of chlorine doubles the rate of reaction. Doubling the concentration of both reactants increases the rate of reaction by a factor of eight. The reaction is (A) first order in both NO and Cl 2. (B) first order in NO and second order in Cl 2. (C) second order in NO and first order in Cl 2. (D) second order in both NO and Cl 2.

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For the reaction of chlorine and nitric oxide, 

2NO(g) + Cl2(g) → 2NOCl(g)

doubling the concentration of chlorine doubles the rate of reaction. Doubling the concentration of both reactants increases the rate of reaction by a factor of eight. The reaction is

(A) first order in both NO and Cl 2.

(B) first order in NO and second order in Cl 2.

(C) second order in NO and first order in Cl 2.

(D) second order in both NO and Cl 2.

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