Question

In a conductometric titration, small volume of titrant of higher concentration is added stepwise to a larger volume of titrate of much lower concentration, and the conductance is measured after each addition.
The limiting ionic conductivity (Λ0) values (in mS m2mol−1 ) for different ions in aqueous solutions are given below:

Ions	Ag+	K+	Na+	H+	$\text{NO}_{3}^{-}$	Cl-	$\text{SO}^{2-}_{4}$	OH-	CH3COO-
$\Lambda_0$	6.2	7.4	5.0	35.0	7.2	7.6	16.0	19.9	4.1
For different combinations of titrates and titrants given in List-I , the graphs of 'conductance' versus ‘volume of titrant’ are given in List-II.
Match each entry in List-I with the appropriate entry in List-II and choose the correct option.
List I	List II
---	---
(P)	Titrate: KCl
Titrant: AgNO3	(1)
(Q)	Titrate: AgNO3
Titrant: KCl	(2)
(R)	Titrate: NaOH
Titrant: HCl	(3)
(S)	Titrate: NaOH
Titrant: CH3COOH	(4)
(5)

• A. P-4, Q-3, R-2, S-5
• B. P-2, Q-4, R-3, S-1
• C. P-3, Q-4, R-2, S-5
• D. P-4, Q-3, R-2, S-1

Answer 1

Answer: (C)

P-3, Q-4, R-2, S-5

Answer 2

The correct option is (C): P-3, Q-4, R-2, S-5