Question

The dipole moment of hcl is 1.03d. what is the dipole moment of hcl in c⋅m?

Answer 1

Answer: Dipole moment  $=3.43\times 10^{-30} Cm$

Explanation: Dipole moment is defined as product of magnitude of the charge and the distance between the charges of equal magnitude and opposite sign is called as dipole moment.

$\mu= e\times d$

$\mu=\text{dipole moment}$

$e=\text{magnitude of charge}$

$d=\text{distance between the charges}$

S.I unit of dipole moment is Debye (D).

Debye was defined as the dipole moment resulting from two charges of opposite sign but an equal magnitude of $10^{-10}$ stat coulomb (generally called e.s.u. (electrostatic unit) which were separated by 1 angstrom.(1 angstrom $=10^{-8}$cm)

$1 Debye=10^{-18}\text{esu cm}$

$1 esu=3.35\times 10^{-10}C$

$1cm=10^{-2} m$

$1Debye=10^{-18}\times3.35\times 10^{-10}C\times 10^{-2}m$

$1Debye=3.35\times 10^{-30}Cm$

$1.03Debye=1.03\times 3.35\times 10^{-30}Cm$

                       $=3.43\times 10^{-30} Cm$