What is second order reaction ? Give two examples.

Explanation

Rate of a reaction is proportional to second power of the concentration of the reactant or reactants.
Example :
(1) `H_(2) + I_(2) to2HI " rate" = k[H_(2)]^(1)[I_(2)]^(1) " Order" = 1 + 1 = 2`
Alkaline hydrolysis of methylacetate
(2) `CH_(3)COOCH_(3) + NaOH to CH_(3)COONa + CH_(3)OH`
Rate ` = k[CH_(3)COOCH_(3)]^(1)[NaOH]^(1) " Order" = 1 + 1 = 2`