Question

( frac{d R}{d t}=-k R )
or ( frac{d a}{d t}=-k a )
( frac{d a}{a}=-k d t )
( Rightarrow ln frac{a t}{a dot{0}}=-k t )
( k t-ln frac{a_{t}}{a_{0}} )
( k t=ln frac{a_{0}}{a_{t}} )
( t=frac{1}{k} ln frac{a_{0}}{a_{t}}=frac{2 cdot 303}{t} log _{10}left(frac{a_{0}}{a t}right) )

# Single Choice Which of the following relation is correct for a first order reaction ? [2o is initial concentration of reactant and a, is concentration of reactant at time t] A 24 = a, e*** D None of these

Solution