The volume (in mL) of 0.1 N NaOH required to neutralise 10 mL of 0.1 N phosphinic acid is .

Question

Canvas Classes · Accepted Answer

Phosphinic acid =  (hypophosphorous acid)

is a monobasic acid (only 1 ionisable P–OH group; the other 2 H atoms are P–H bonds which are non-ionisable).

For neutralisation:

Since phosphinic acid is monobasic, its normality = molarity. 10 mL of 0.1 N NaOH is needed.

Answer: 10 mL

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