Question

Which one of the following statement is/are correct?

• A. A polar solvent has non-zero dipole moment
• B. A polar solvent has zero dipole moment
• C. $C{H}_{3}OH,H_{2}O,C{H}_{3}COC{H}_3$ are polar solvents
• D. (a) and (c) above.

Answer 1

The correct option is D (a) and (c) above.

Polar solvents are liquids that have a non-zero dipole moment. These are liquids that can dissolve polar compounds. It is because both polar solvents and polar compounds have dipole moments and have oppositely charged moieties in the same chemical compound
for example: $C{H}_{3}OH,H_{2}O,C{H}_{3}COC{H}_3,C{H}_{3}CNetc.$

Water molecule has two O-H bonds. The difference in electronegativity between the oxygen atom and hydrogen atom is considerably high making it polar.
Similarly $C{H}_{3}OHandC{H}_{3}COC{H}_3$ are polar solvent.