Medium MCQ +4 / -1 PYQ · JEE Mains 2020

Let CNaCl and CBaSO4 be the conductances (in S) measured for saturated aqueous solutions of NaCl and BaSO4, respectively, at a temperature T. Which of the following is false?

  1. A Ionic mobilities of ions from both salts increase with T.
  2. B C<sub>NaCl</sub>(T<sub>2</sub>) &gt; C<sub>NaCl</sub>(T<sub>1</sub>) for T<sub>2</sub> &gt; T<sub>1</sub>
  3. C C<sub>BaSO<sub>4</sub></sub>(T<sub>2</sub>) &gt; C<sub>BaSO<sub>4</sub></sub>(T<sub>1</sub>) for T<sub>2</sub> &gt; T<sub>1</sub>
  4. D C<sub>NaCl</sub> &gt;&gt; C<sub>BaSO<sub>4</sub></sub> at a given T Correct answer

Solution

BaSO<sub>4</sub> is sparingly soluble salt but NaCl is completely soluble salt so it will produce more number of ions. That is why <br>Conductance (NaCl) &gt; Conductance (BaSO<sub>4</sub>)

About this question

Subject: Chemistry · Chapter: Electrochemistry · Topic: Electrochemical Cells

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