Write equations to show the step wise ionization of the polyprotic acids `H_(2)SO_(4)` and `H_(3)PO_(4)`.

Explanation

Step wise- Ionisation `H_(2)SO_(4)`
Step `1H_(2)SO_(4(aq)) hArr H_((aq))^(+)+HSO_(4(aq))`
Step `3HSO_(4(aq))^(-) hArr H_((aq))^(+)+SO_(4(aq))^(-2)`
Ka is very larg
`Ka_(2)=1.2xx10^(-2)`
Step 1 wise Ionisation of `H_(3)PO_(4)`
Step 2 `H_(2)P_(4(aq)) hArr H_((aq))^(+) H_(2)PO_(4(aq))`
Step 3 `H_(2)PO_((aq))^(2) hArr PO_((aq))^(-3)_H_((aq))^(+)`
`Ka_(1)=7.5xx10^(-13)`