RATE OF REACTION:
The amount of reactants converted into products in given time is called rate of the chemical reaction.
Rate of reaction = Decrease in the concentration of reactants/given time
Increase in the concentration of products/given time
The unit of rate of reaction is Mol/dm³ / sec or Moldm-³sec-1
VELOCITY OF REACTION:
The rate of a chemical reaction determined for a very small interval of time during the process is called velocity of the reaction. It is denoted by dx/dt.