Define the following :
(i) Order of reaction
(ii) Activation energy of reaction

Explanation

(i) It may be defined as the sum of exponents of the concentraiton tem in the rate Law expression.
(ii) It may be defined as the extra amount of energy over and above the average energy of reactants which must be supplied to them to undergoe a chemcial reaction
(i) Rate =`-(1)/(2)(d[B])/(dt)=(1)/(2)xx1xx10^(-2)=0.5xx10^(-2)"mol"|L|S`
(ii) Rate = `-(1)/(2)(d[A])/(dt)=(-1)/(2)(d[B])/(dt)=+(1)/(3)(d[c])/(dt)`
Rate of change in concentration of A,
`-(d[A])/(dt)=(-1)/(2)(d[B])/(dt)=0.5xx10^(-2)"mol"^(-1)|L|S`
Rate of change in concentration of C
`+(d[C])/(dt)=-(3)/(2)(d[B])/(dt)=(3)/(5)xx10^(-2)=1.5xx10^(-2)"mol"|L|S`