Question

Glycerol (propane 1,2,3 triol) is more viscous than ethylene glycol (ethane 1,2, diol). Explain

Answer 1

Glycerol,

\[\begin {array}{cc}
\ce{CH2-OH}\\
|\phantom{........}\\
\ce{CH-OH}\\
|\phantom{........}\\
\ce{CH2-OH}
\end{array}\]

Glycol,

\[\begin {array}{cc}
\ce{CH2-OH}\\
|\phantom{........}\\
\ce{CH2-OH}
\end{array}\]

Glycerol is more viscous than glycol because in glycerol there are more extensive H^- Bonds as compared to in glycol.