Question

The high boiling point of ethanol ${78.2}^{o}C$ compared to dimethyl ether $-{23.6}^{o}C$, though they have the same molecular formula $\left[C_2{H}_{6}O\right]$, is due to:

• A. Hydrogen bonding
• B. Ionic bonding
• C. Co-ordinate covalent bonding
• D. Resonance

Answer 1

The correct option is A Hydrogen bonding

Even though the ethanol and dimethyl ether contains same molecular formula $C_2{H}_{6}O$, ethanol contains the boiling point $78.2$ degree centigrade while dimethyl ether contains the boiling point $-23.6$ degree centigrade because of the presence of hydrogen bonding in ethanol where as the hydrogen bonding is absent in di methyl ether.