A 100ml solution of 0.1N HCl was titrated with 0.2N NaOH solution . The titration was discontinued after adding 30ml of NaOH solution . The remaining titration was completed by adding 0.25 N KOH solution . The volume of KOH required for completing the titration is ___ .

(a) 70 ml. (b) 32 ml. (c)35 ml. (d)16ml

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In an experiment, 20 mL of decinormal HCl solution was added to 10 mL of a decinormal AgNO3 solution. AgCl was precipitated out and the excess acid was titrated against a decinormal NaOH solution. Volume of NaOH required for this back titration is:

The correct option is C 10 mL10 mL 0.1 N AgNO3 will react with 10 mL of 0.1 N HCl.∴0.1 N HCl left=10 mLThus, it will neutralise 10 mL of 0.1 N NaOH.

In an experiment, $20 m L$ of decinormal $H C l$ solution was added to $10 m L$ of a decinormal $A g N O_{3}$ solution. $A g C l$ was precipitated out and the excess acid was titrated against a decinormal $N a O H$ solution. Volume of $N a O H$ required for this back titration is:

The correct option is C $10 m L$
$10 m L 0.1 N A g N O_{3}$ will react with $10 m L$ of $0.1 N H C l$ .
$∴ 0.1 N H C l l e f t = 10 m L$
Thus, it will neutralise $10 m L$ of $0.1 N N a O H$ .