1.

For a reaction Ato Product, half life is 50 min, when the initial concentration of A is 4 molar Half life of same reaction is 80 min, when the initial concentration of A is 2 molar. Then

Answer»

Order is 1
Order of reaction is 2
units of rate constant is `"TIME"^(-1)`
Unit of rate of reaction is MOLE `"litre"^(-1)"time"^(-1)`

Solution :`t_(1/2)to40""80`
`C_(0)to4""2`
`((t_(1/2))_(1))/((t_(1/2))_(2))=((C_(2))/(C_(1)))^((n-1)),(40/80)=(2/4)^((n-1)),(1/2)^(2)=(1/2)^(n-1)`
`1=n-1,n=1+1,n=2`
`r=K.C^(2),M/t=K.M^(2)impliesK=M^(-1)"time"^(-1)="mole"^(-1),"lit"-"time"^(-1)`


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