\(\begin{array}{*{20}{c}}
{\,\,\,\,\,\,\,\,\,COOH} \\
{|\,\,\,\,} \\
{H - C - OH} \\
{ - - - | - - - - } \\
{H - C - OH} \\
{|\,\,\,\,} \\
{\,\,\,\,\,\,\,\,\,COOH}
\end{array}\)
Plane of Symmetry
Mesotartaric acid is optically inactive due to internal compensation i.e. the effect one half of the molecule is neutralized by other.


