1.

In the Lindemann theory of unimolecular reactions, it is shown that the apparent rate constant for such a reaction is k_("app") =(k_(1)C)/(1+ alpha C) where C is the concentration of the reactant k_(1) and alpha are constants. Calculate the value of C for which k_("app") has 90% of its limiting value at C tending to infinitely large values, given alpha= 9 xx 10^(5).

Answer»

`10^(-6)` mole/litre
`10^(-4)` mol/litre
`10^(-5)` mole/litre
`5xx10^(-5)` mol/litre

Answer :C


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