Question

What is the rate constant?

Answer 1

When the concentration (active mass) of each reactant is at unity, the rate constant of a chemical reaction equals the rate of the reaction.

∵ Rate of reaction ∝ [Reactant]

If A →product, then

rate (R) = k[A]

If [A] = 1, then rate, R = k,

where k is the rate constant.