1.

If the concentration units for the first order reaction is increased by 'm' times, then the rate constant k will be

Answer»

km
k + m
k/ m
k

Solution :Rate constant , k , for a first order reaction is ` k = (2.303)/(t) "log" (a)/(a-x)`
On increasing the concentration UNITS by m times ,
`k'= (2.303)/(t) "log" (ma)/(m (a-x))`
or k' = k, thus , the VALUE of first order rate constant REMAINS the same onchanging the concentration units .


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