Conductivity of Ionic Solutions

Q.

How do You Identify Electrolytes?

Q. Assertion :Molar conductivity increases with decrease in concentration for weak electrolytes. Reason: No. of ions increases and no. of ions per unit volume decreases due to dilution.

1. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
2. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
3. Assertion is correct but Reason is incorrect
4. Both Assertion and Reason are incorrect

Q. Which among the following relations is incorrect for a solution of acetone and ethanol?
निम्नलिखित में से एसीटोन तथा एथेनॉल के विलयन के लिए कौनसा सम्बन्ध गलत है?

1. Δ_mixS > 0
   
2. Δ_mixV < 0
   
3. Δ_mixH > 0
   
4. Δ_mixG < 0
   

Q. An aqueous solution of X is is added slowly to an aqueous solution of Y as shown in Column I. The variation in conductivity of these reactions is given in Column II. Match Column I with Column II and select the correct answer using the codes given below the Columns.
$\begin{array}{cc}ColumnI& ColumnII\\ P.\underset{X}{(C_2{H}_5{)}_3}N+\underset{Y}{C{H}_{3}COOH}& 1.Conductivitydecreasesandthenincreases\\ Q.\underset{X}{KI\left(0.1M\right)}+\underset{Y}{AgN{O}_3}\left(0.01M\right)& 2.Conductivitydecreasesandthendoesnotchangemuch\\ R.\underset{X}{C{H}_{3}COOH}+\underset{Y}{KOH}& 3.Conductivityincreasesandthendoesnotchangemuch\\ S.\underset{X}{NaOH}+\underset{Y}{HI}& 4.Conductivitydoesnotchangemuchandthenincreases\end{array}$

1. P - (3) Q - (4) R - (2) S - (1)
2. P - (4) Q - (3) R - (2) S - (1)
3. P - (2) Q - (3) R - (4) S - (1)
4. P - (1) Q - (4) R - (3) S - (2)

Q.

Define the following term.

Electrolyte