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The normality of 0.3 M phosphorous acid ...

The normality of `0.3 M` phosphorous acid `(H_(3) PO_(3))` is

A

`0.1`

B

`0.9`

C

`0.3`

D

`0.6`

Text Solution

Verified by Experts

The correct Answer is:
D
Phosphorus acid is a diabasic acid as:
`H-underset(OH)underset(|)overset(O)overset(||)(P)-OH` only two replaceable hydrogens
Therefore, normality = molarity `xx` basicity `= 0.3 xx 2 =0.60`
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