Question

define specific reaction rate constant and its SI unit​

Answer 1

Answer:-

The specific rate constant (k) is the proportionality constant relating the rate of the reaction to the concentrations of reactants.

It depends on the order of the reaction.

Zero Order Reactions

rate = k[A]0

M/t = k

k units: M/s, M/min, M/hr, etc.

First Order Reactions

rate = k[A]

M/t = k M

k units: s-1, min-1, hr-1, etc.

Second Order Reactions

rate = k[A]2 rate = k[A][B]

M/t = k M2

k units: M-1s-1, M-1min-1, M-1hr-1, etc.

Third Order Reactions

rate = k[A]3 rate = k[A]2[B] rate = k[A][B][C]

M/t = k M3

k units: M-2s-1, M-2min-1, M-2hr-1, etc.

n Order Reactions

rate = k[A]n

M/t = k Mn

k units: M-(n-1)s-1, etc.