Question

A reaction that is of first order with respect to reactant
A has rate constant 6 minute -1. If we start with [A] =5
mol/litre, when would [A] reach the value of 0.05
mol/litre ?
​

Answer 1

Answer:

0.384

Explanation:

We know that for first order kinetics

k=2.303tlogaa−x

(a−x)=0.05molL−1,6=2.303tlog0.50.05

or t=2.3036log0.50.05=2.3036=0.384min