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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

`10mL`

B

`20mL`

C

`40mL`

D

`60mL`

Text Solution

Verified by Experts

The correct Answer is:
C
`H_(3)PO_(3) +3KOH rarr K_(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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