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