MCQ
Dissociation of ${H_3}P{O_4}$ takes place in following steps
- A$1$
- B$2$
- ✓$3$
- D$4$
✓
Answer
Correct option: C.
$3$
c
$\begin{gathered}
I\,\,step \,\,\,\, {H_3}P{O_4} \rightleftharpoons {H^ + } + {H_2}PO_4^ - \hfill \\
II\,\,step \,\,\,\, {H_2}PO_{_4}^ - \rightleftharpoons {H^ + } + HPO_4^{ - - } \hfill \\
III\,\,step \,\,\,\, HPO_4^{ - - } \rightleftharpoons {H^ + } + PO_4^{ - - - } \hfill \\
\end{gathered}$
$\begin{gathered}
I\,\,step \,\,\,\, {H_3}P{O_4} \rightleftharpoons {H^ + } + {H_2}PO_4^ - \hfill \\
II\,\,step \,\,\,\, {H_2}PO_{_4}^ - \rightleftharpoons {H^ + } + HPO_4^{ - - } \hfill \\
III\,\,step \,\,\,\, HPO_4^{ - - } \rightleftharpoons {H^ + } + PO_4^{ - - - } \hfill \\
\end{gathered}$
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