Question

Which of the following solutions has theleast value of conductivity?

(a) 0.01M Na2SO4

(b) 0.01M NaCl

(c) 0.01M CH3COOH

(d) 0.01M HCl

This question was addressed to me in an interview for job.

My question is from Conductance of Electrolytic Solutions in chapter Electrochemistry of Chemistry – Class 12

Answer 1

Correct choice is (c) 0.01M CH3COOH

For explanation I would say: The conductivity of a solution depends on the strength of the ions that make up the solution because strong electrolytes dissociate easily and increase the number of ions, increasing the conductivity of the solution. Since CH3COOH is not a strong electrolyte, and because all of the solutions have the same concentration, it has the least value of conductivity.