`H_3PO_3` is diprotic acid. Explain.

H_3PO_4 is triprotic acid. Explain.

H_3PO_2 is monoprotic acid. Explain.

H_3PO_2 is monoprotic acid. Explain.

How H_(3)PO_(3) is diprotic acid?

Given reason: H_3PO_4 is triprotic acid but H_3PO_3 is diprotic acid. Why?

CrO_3 is an acid anhydride. Explain.

'Is boric acid a protonic acid ? Explain.

HF is the weakest acid and Hl is strongest acid. Explain.

Carbonic acid (H_(2)CO_(3)), a diprotic acid has K_(a1)=4.0xx10^(-7) and K_(a2)=7.0xx10^(-11). What is the [CO_(3)^(2-)] of a 0.025 M solution of carbonic acid?