In chemical kinetics, we study about the rate chemical reactions and their mechanism.
Factors that affect a chemical reaction: 1. Concentration, 2. Temperature, 3. Pressure, 4. Catalyst
Rate of reaction: If we have a reaction as follows:
Average rate of decreasing of the reactant=R/t
Instantaneous rate of increasing the product=P/t
Instantaneous rate of decreasing of the reactant=d[R]/dt
Instantaneous rate of increasing of the product=d[P]/dt
where [R] and [P] are the concentrations of reactant and product respectively.