Question

a catalyst increases the rate of reaction then what will be the effect on rate constant

Answer 1

Heya☺

There is no affect on it .

Answer 2

rate constant (k)- which is only actuallyconstant if all you are changing is the concentration of the reactants. If you change the temperature or thecatalyst, for example, the rate constantchanges. This is shown mathematically in the Arrhenius equation.