Question

To neutralise completely 20 mL of 0.1 M aqueous solution of phosphorous acid (H3PO3) the
volume of 0.1 M aqueous KOH solution required is
(a) 40 ml
(b) 20 mL
(c)10ml
(d) 60ml​

Answer 1

Answer:

(b) 20 ml

Explanation:

To neutralize 20ml of 0.1 M aqueous solution of phosphorus acid we need 20ml of volume 0.1 M of KOH solution