MCQ
In pyrophosphoric acid number of hydroxyl group are
- A$2$
- B$3$
- ✓$4$
- D$5$
✓
Answer
Correct option: C.
$4$
c
Pyrophosphoric acid $\begin{array}{*{20}{c}}
{O\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,O} \\
{||\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,||} \\
{H - O - P - O - P - O - H} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,|} \\
{\,\,\,\,\,\,OH\,\,\,\,\,\,\,\,\,\,\,\,\,OH\,\,\,\,\,}
\end{array}$
Pyrophosphoric acid $\begin{array}{*{20}{c}}
{O\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,O} \\
{||\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,||} \\
{H - O - P - O - P - O - H} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,|} \\
{\,\,\,\,\,\,OH\,\,\,\,\,\,\,\,\,\,\,\,\,OH\,\,\,\,\,}
\end{array}$
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