1.

During conductometric titration of 0. 1 MHCl with 1.0 M KOH, which is the correct observation ?

Answer»

Resistance of the SOLUTION decreases upto equivalence point and them INCREASES
Resistance increases upto equivalence point and then decreases.
Conductance increases upto equivalence point and then decreases.
Conductance decreases upto equivalence point and then BECOMES almost constant.

Solution :Upto equivalence point highly mobile `H^(+)` GET replaced by much less mobile `K^(+)` ions . Hence resistance of solution of increases . After equivalence point resistance decreases due to unreacted `K^(+)` and highly mobile `OH^(-)` ions


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