Question

The monomers used in the preparation of dextron are ______.

Options

• glycine and ω - amino caproic acid

• 3 - hydroxy butanoic acid and 3-hydroxy pentanoic acid

• glycine and lactic acid

• lactic acid and glycolic acid

Answer 1

The monomers used in the preparation of dextron are lactic acid and glycolic acid.

Explanation:

The monomers used in the preparation of dextron are lactic acid and glycolic acid. The reaction for the formation of dextron can be written as:

\[\begin{array}{cc}
\phantom{.......}\ce{OH}\phantom{.............}\ce{OH}\phantom{...................................}\ce{O}\phantom{................}\ce{O}\phantom{....}\\
\phantom{....}|\phantom{................}|\phantom{.....................................}||\phantom{................}||\phantom{.}\\
\ce{\underset{\text{Lactic acid}}{\text{n}CH3 -}CH - COOH + \underset{\text{Glycolic acid}}{\text{n}CH2 -}COOH ->[-H2O] [- C - CH - C - \underset{\text{Dextron}}{O - CH2} - C - O -}]_n\\
\phantom{............................}|\\
\phantom{...............................}\ce{CH3}
\end{array}\]