Question

What is the difference between the rate of reaction and the reaction rate constant?

Answer 1

Difference between rate of reaction and reaction rate constant

Serial number	Rate of reaction(R)	Rate constant(K)
1	Rate of a reaction is defined as the change in the concentration of a reactant or product in unit time.	Rate constant is equal to rate of reaction when the concentration of each reactant is taken as unity in a reaction.
2	The rate of reaction depends upon the concentration of reactants, catalyst, and temperature.	It is independent of the concentration of the reactant and depends on temperature.
3	The unit of rate of reaction is ${\text{mol L}}^{\text{-1}}{\text{s}}^{\text{-1}}$ in liquid state. The unit of rate of reaction is ${\mathrm{atm}}^{\text{-1}}{\text{s}}^{\text{-1}}$ in gaseous state.	The unit of rate constant changes with the order of the reaction. General formula for unit of rate constant: ${(\mathrm{mol}{\mathrm{L}}^{-1})}^{1-\mathrm{n}}{\mathrm{s}}^{-1}$ where n is order of reaction.