**(i) ****Zero order Reaction:**

Mathematical expression for first order reaction :

Rate of reaction is independent of concentration. Where c ≠ O

Unit of Rate Constant: mol. litre^{-1} time^{-1}

Examples:

**(ii) First Order Reaction:**

Mathematical expression for first order reaction :

**(iii) Pseudo First Order Reaction:**

When the order of reaction seems like 2 but one component in large excess then it behaves like first order, such type of reaction, are called as **pseudo first order reaction**.

Examples:

when water is taken an solvent i.e. in excess.

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Class 12 Chemistry Chemical Kinetics All Topics Notes CBSE Class 12 Chemistry All Chapters Notes

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