The no. of conjugate acid-base pairs present in the aqueous solution of `H_(3)PO_(3)` is

What is conjugate acid-base pair?

Which is not a conjugate acid/base pair ?

Conjugate acid - base pair differ by

For a very dilute aqueous solution of H_(3)PO_(3) van't Hoff factor

Indentify the conjugate acid base pair for the following reaction in aqueous solution. ii) HPO_(4)^(2-)+SO_3^(2-) hArr PO_4^(3-)+HSO_3^-

Identify the conjugate acid base pair for the following reaction in aqueous solution. i) HS_(aq)^(-)+HF hArr F_(aq)^(-)+H_2S_(aq)

Indentify the conjugate acid base pair for the following reaction in aqueous solution. iii) NH_4^++CO_3^(2-) hArr NH_3+HCO_3^-

H_(3)PO_(3) is ..... acid