1.

A 2.5 gm impure sample containing weak monoacidic base (Mol. wt. =45) is dissolved in 100 ml water and titrated with 0.5 M HCl when(1/5)^(th) of the base was neutralised the pH was found to be 9 and at equivalent point pH of solution is 4.5. Given: All data at 25^@C & log 2= 0.3. Select correct statement(s).

Answer»

`K_b` of base is less than `10^(-6)`
Concentration of SALT
at equivalent POINT is 0.25 M
VOLUME of HCl is used at equavalent point is 100 ml

Answer :B::C


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