1.

For the first order reactions:

Answer»

the degree of DISSOCIATION is equal to `(1-e^(kt))`
a PLOT of RECIPROCAL CONCENTRATION of the reactant vs tme gives a straight line.
the time taken for the completion of `75%` reaction is thrice the `1//2` of the reaction.
the pre-exponential FACTOR in the Arrhenius equation has the dimension of time `(T^(-1))`

Solution :(a,d) for first order reaction, if `alpha` is the degree of dissociation,
`k=1/tlog_(e)1/(1-infty)`
or `kt = log_(e)1/(1-infty)`
`=-log_(e)1(1-infty)`
`e^(-kt) = (1-infty)`
`therefore alpha=(1-e)^(-kt)`


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