An aqueous solution of X is added slowly to an aqueous solution of Y as shown in List – I. The variation in conductivity of these reactions in List – II. Match List – I with List – II and select the correct answer using the code given below the lists:
List – I List - II
(P) 
(1) Conductivity decreases and then increases
(Q) 
(2) Conductivity decreases and then does not change much
(R) 
(3) Conductivity increases and then does not change much
(S) 
(4) Conductivity does not change much and then increases
Codes:
P Q R S
Text Solution
Verified by ExpertsA
(P) 
Initially conductivity increases due to ion formation after that it becomes practically constant because X alone can not form ions. Hence (3) is the correct match.
(Q) 
Number of ions in the solution remains constant until all the AgNO 3 precipitated as AgI. Thereafter conductance increases due to increases in number of ions. Hence (4) is the correct match.
(R) Initially conductance decreases due to the decrease in the number of 
ions thereafter it slowly increases due to the increases in number of H + ions. Hence (2) is the correct match.
(S) Initially it decreases due to decrease in H + ions and then increases due to the increases in OH ions.
Hence (1) is the correct match.
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