1.

The reaction A overset(k)(to) Product, is zero order while the reaction Boverset(k)(to) Product, is first order reaction. For what initial concentration of A are the half lives of the two reactions equal ?

Answer»

`(log_(e)4)M`
`2M`
`log 2M`
`ln 2M`

Solution :For ZERO order reaction, `x=kt`
`:.(a)/(2)xxkxxt_(1//2)`, i.e. `t_(1//2)=(a)/(2K)`……..`(i)`
For first order reaction, `t_(1//2)=(log_(e )2)/(K)` ……….`(ii)`
From `(i)` and `(ii)` `(a)/(2k)=(log_(e)2)/(k)`
`a=log_(e )4M`


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