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To neutralize completely 20 mL of 0.1M a...

To neutralize completely 20 mL of 0.1M aqueous solution of phosphorus acid `(H_(3)PO_(3))` the volume of `0.1M` aqueous KOH solution required is

A

10 mL

B

20 mL

C

40 mL

D

60 mL

Text Solution

Verified by Experts

The correct Answer is:
C
`H_(3)PO_(3)+2KOHrarrK_(2)HPO_(3)+2H_(2)O`
For complete neutralisation
`(M_(a)V_(a))/(n_(a))=(M_(b)V_(b))/(n_(b))`
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