# NEET Chemistry Chemical Kinetics Questions Solved

NEET - 2012

In a reaction, A+B  Product, rate is doubled when the concentration of B is doubled, and rate increases by a factor of 8 when the concentrations of both the reactants (A and B) are doubled. Rate law for the reaction can be written as

(a) Rate = k[A][B]2

(b) Rate = k[A2][B2]

(c) Rate = k[A][B]

(d) Rate = k[A]2 [B]

(d) Let the order of reaction with respect to A and B is x and y respectively. So, the rate law can be given as                    .........(i)

When the concentration of only B is doubled, the rate is doubled, so

......(ii)

If concentrations of both the reactants A and B are doubled, the rate increases by a factor of 8, so

Substitution of the value of x and y in Eq. (i) gives,

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