Why isn't the rate divided by 2 here - Chemistry - Chemical Kinetics

Question

W h y   i s n ' t   t h e   r a t e   d i v i d
e d   b y   2   h e r e   ?

Shyam Prasad V · Accepted Answer

Dear student
In the above equation the concentration of the iodide ion remains a
constant and hence the reaction behaves as a pseudo first order
reaction and the rate law only depends on the change in
concentration of H2O2 only, hence there is no need to divide by 2
in the rate equation

W h y i s n ' t t h e r a t e d i v i d e d b y 2 h e r e ?

$W h y i s n' t t h e r a t e d i v i d e d b y 2 h e r e ?$