Question

How will you prove that conc. sulphuric acid is Dibasic acid?

Answer 1

Dibasic acids releases 2H⁺ ions when dissolved in water.

Dilute sulphuric acid ionizes in two steps, proving its dibasic nature.

${\mathrm{H}}_2{\mathrm{SO}}_4+{\mathrm{H}}_2\mathrm{O}\rightleftharpoons {{\mathrm{HSO}}_4}^{-}+{\mathrm{H}}_3{\mathrm{O}}^{+}$

${{\mathrm{HSO}}_4}^{-}+{\mathrm{H}}_2\mathrm{O}\rightleftharpoons {{\mathrm{SO}}_4}^{2-}+{\mathrm{H}}_3{\mathrm{O}}^{+}$