2) Determine the rate law for the following reaction using the data provided. 2)

ID: 692806 • Letter: 2

Question

2) Determine the rate law for the following reaction using the data provided. 2)_______

2 A(g) + B(g) 2 C(g)

[A]i (M) [B]i (M) Initial Rate (M s-1)

0.030 0.0055 8.55 x 10-3

0.030 0.0110 3.42 x 10-2

0.060 0.0055 8.54 x 10-3

A) Rate = k[A][B]

B) Rate = k [B]2

C) Rate = k[A]2[B]2

D) Rate = k[A]2[B]

E) Rate = k[A][B]2

consider first two data
[A] is constant
and [B] is double
and rate become 4 times
so, order with respect to B is 2

now consider first and third data
[B] is constant
and [A] is double
and rate remains same
so, order with respect to A is 0

hence,
rate = k*[A]^0*[B]^2
rate = k*[B]^2

Answer : option B

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