Question

`H_2SO_4` can ionize to yield two `H^+` ions an and one `SO_4^-2` ion. What is #H_2SO_4 considered?

Answer 1

Sulfuric acid is considered to be a diacid.

Explanation:

Sulfuric acid donates 2 equiv of `H_3O^+` to aqueous solution.

`H_2SO_4 + H_2O rarr HSO_4^(-) + H_3O^+`

`HSO_4^(-) + H_2O rarr SO_4^(2-) + H_3O^+`

The first equilibrium lies almost quantitatively to the right. The second equilibrium is smaller, but still operates, `K_(a2)=1.2xx10^-2`.