Answer to Question #251746 in General Chemistry for KING

Question

Consider the reaction

A—> B

The rate of the reaction is 1.6 x 10 ^-2 m/s when the concentration of A is 0.35 M. Calculate the rate constant if the reaction is (a) first order in A and (b) second order in A.

Answer 1

(a) First order reaction:

Rate = k(A),

Where (k) is a constant

R = [ ( 1.6)(10^-2)](0.35)

R = (5.6)(10^-2)ms^-1

R = 0.056ms^-1

(b) Second order reaction:

Rate = k ( A) ²

R = [(1.6)(10)^-2 ](0.35)²

R = (1.96)(10^-3)m^-1s^-1

R = 0.00196m^-1s^-1-