1.

For a reaction Ato products, half life is 40 min, when the initial concentration of A is 4 molar. Half life of same reaction is 80 mm when the initial concentration orf A is 2 molar. Then

Answer»

order is 1
order of the REACTION is 2
units of rate constant is `"time"^(-1)`
unit of rate of reaction MOLE `"LIT"^(-1)"time"^(-1)`

Solution :`[A]_(0)""4""2`
`t_(1/2)""40""80`
`((t_(1/2))_(1))/((t_(1/2))_(2))=((C_(2))/(C_(1)))^((n-1)),(40/80)=(2/4)^((n-1)),(1/2)^(1)=(1/2)^(n-1),1=n-1,n=2`


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