The answer is (3) CH3COOH. CH3COOH is a acid. It can ionized in water. So the solution can conduct an electric current. And the other three can not be ionized in water.
Explanation:
There will occur a straight line for the curve of Ln[(CH_{3})_{3}CCl] Vs. time. Since, it is a first order reaction therefore, the formula of its half-life will be as follows.
Half-life = 
or, k = 
=
So, rate of the reaction will be as follows.
Rate = ![[(CH_{3})_{3}CCl]^{1}](https://tex.z-dn.net/?f=%5B%28CH_%7B3%7D%29_%7B3%7DCCl%5D%5E%7B1%7D)
= 
= 0.000473
=
Thus, we can conclude that the instantaneous rate of given reaction is
.