Question

Which of the following acids is monobasic ?

• A. Hypophosphorous acid (H3PO2)
• B. Orthophosphoric acid (H3PO4)
• C. Pyrophosphoric acid (H4P2O7)
• D. Hypophosphoric acid (H4P2O6)

Answer 1

Answer: (A)

Hypophosphorous acid (H3PO2)

Answer 2

Hypophosphorous acid (H3PO2)

It has one replaceable hydrogen.