Question

Debye is a unit of:

• A. Dipole moment
• B. Field effect
• C. Dissociation constant
• D. Bond energy

Hint:

Dipole moment reflects the polarity of a molecule and is commonly expressed in Debye. Polar molecules like H\textsubscript{2}O have a higher dipole moment than nonpolar molecules like CO\textsubscript{2}.

Answer 1

The Correct Option is A

- The Debye (D) is a unit used to express the dipole moment of a molecule. Dipole moment is a measure of the separation of positive and negative charges in a molecule.
It is a vector quantity given by:
$$ \mu = q \times d $$ where \( \mu \) is the dipole moment, \( q \) is the magnitude of the charge, and \( d \) is the distance between the charges.
- 1 Debye (D) is equal to: $$ 1\ \text{D} = 3.336 \times 10^{-30}\ \text{Coulomb-meter} $$ - Dipole moments are important for understanding molecular polarity, solubility, and intermolecular interactions.
- Other options explained:
- (B) Field effect relates to electron withdrawal through space, not measured in Debye.
- (C) Dissociation constant is expressed in terms of concentration (mol/L).
- (D) Bond energy is measured in kcal/mol or kJ/mol.