Question

In a first order ractin, the concentration of the reaction is reduced from 0.6 mol /L to 0.2 mol/L in 5 min. Calculate the rate fconstnat (k).

Answer 1

`a=0.6 mol L^(-1),a-x =0.21 mol L^(-1),t =5 min.`
Since it is a first order reaction.
`k=(2.303)/(t)log _(10) ""(a)/((a-x))`
`k=(2.303)/(t)log ""(0.6)/(0.2)=0.2197 min ^(-1).`