What is the value of $\mathrm{C}-\mathrm{O}-\mathrm{H}$ bond angle in $\mathrm{CH}_{3}-\mathrm{OH}$ ?
What is the value of $\mathrm{C}-\mathrm{O}-\mathrm{H}$ bond angle in $\mathrm{CH}_{3}-\mathrm{OH}$ ?
$108.9^{\circ}$
$107^{\circ}$
$109.5^{\circ}$
$110^{\circ}$
Solution
$108.9^{\circ}$
Due to repulsion between lone pair electrons of oxygen atoms, the $\mathrm{C}-\mathrm{O}-\mathrm{H}$ bond angle in $\mathrm{CH}_{3}-\mathrm{OH}$ (methanol) is $108.9^{\circ}$. It can be readily demonstrated as follows:
