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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 m 2 mol −1 ) for different ions in aqueous solutions are given below: Ions Ag + K + Na + H + NO 3 − Cl − SO 4 2 − OH − CH 3 COO − Λ 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: AgNO 3 (1) Conductance Volume of titrant (Q) Titrate: AgNO 3 Titrant: KCl (2) Conductance Volume of titrant (R) Titrate: NaOH Titrant: HCl (3) Conductance Volume of titrant (S) Titrate: NaOH Titrant: CH 3 COOH (4) Conductance Volume of titrant (5) Conductance Volume of titrant
- P-4, Q-3, R-2, S-5
- P-2, Q-4, R-3, S-1
- P-3, Q-4, R-2, S-5
- P-4, Q-3, R-2, S-1
Correct answer: P-3, Q-4, R-2, S-5
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