Q15 / 75 · JEE Main 2020 (03 Sep Shift 1) · Chemistry
Let and , be the conductances (in S) measured for saturated aqueous solutions of and respectively, at a temperature T. Which of the following is false?
- Correct answerAlonic mobilities of ions from both salts increase with T.
- B
- C
- Dat given
Solution
(i) Ionic mobilities decreases with increase in temperature due to increase in random motion and hence decrease in relaxation time so derease in drift speed.
(i) is completely soluble salt while is sparingly soluble salt so .
(ii) On increasse in temperature conductance increase.
Hence, the correct answer is option: 'A'.