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Which of the following are true for H(...

Which of the following are true for `H_(3)PO_(2)` ?

A

It is tribasic acid .

B

One mole of it is neutralized by 0.5 mol of `Ca(OH)_(2)`

C

If 100 ml of `M/3` is neutralized by 100 ml of 1 N NaOH .

D

`NaH_(2)PO_(2)` is normal salt .

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