Question

Why does rate of reaction does not remain constant?

Answer 1

Answer:

because it depends upon the conc of reactant as product comc decreases it also decreases

Answer 2

Rate of reaction does not remain constant because it depends upon the concentration of reactant.

Rate = K [A]^x [B]^y

where, K = rate constant

[A] = concentration of reactant A

[B] = concentration of reactant B

x ,y = order of A and B respectively. it is determined experimentally and it can be fractional, negative,whole number,integer.

EXCEPTION: And one point to remember only when order is zero then rate does not depend on reactant.therefore rate equals rate constant.

Rate = K

Hope it helps you.