Instantaneous Rate of Reaction
Rate of a chemical reaction at a particular moment of time, is known as instantaneous rate of reaction.
For reaction,
Methods for measuring reaction rate( i) pH measurement,( ii) change in optical activity,( iii) change in pressure,( iv) change in conductance.
Slowest step of a reaction was called rate determining step by van’ t Hoff.
Factors Affecting Rate of Reaction |
1. |
Nature and concentration of reactant |
2. |
Temperature |
3. |
Surface area of reactant |
4. |
Radiations and catalyst |
5. |
Pressure of gas |
Rate Law Expressions
According to the law of mass action, For a chemical reaction, aA + bB → Products
Rate α [ A ] a [ B ] b = k [ A ] a [ B ] b