Answer:
The Dipole moment is 6.77 Debyes.
Explanation:
Given bond length of HBr molecule = 1.41 A°,
We also know charges on H and Br(+1 and -1 respectively)
Charge on H = (+1) [tex]\times[/tex] (absolute charge of electron);
Charge on Br = (-1) [tex]\times[/tex] (absolute charge of electron);
Since absolute charge on electron = [tex]1.602\times 10^{-19}[/tex];
Therefore charge on H = [tex]1.602\times 10^{-19}[/tex] Coulomb;
charge on Br = [tex]-1.602\times10^{-19}[/tex]
We know Dipole Moment = Charge [tex]\times[/tex] Distance;
Here,
Distance = Bond Length = 1.41 A° = 1.41 [tex]\times 10^{-10}[/tex];
and charge on atom = [tex]1.602\times 10^{-19}[/tex] Coulomb;
Therefore,
Dipole Moment = Distance [tex]\times[/tex] Charge
Dipole Moment = [tex]1.41\times10^{-10} \times1.602\times10^{-19}[/tex];
Dipole Moment = [tex]2.25882\times10^{-29}[/tex] SI units.
The conversion factor of for SI units to Debye is 2.9989 [tex]\times 10^{29}[/tex]
Therefore,
Dipole Moment = 2.25882 [tex]\times 10^{-29}\times 2.9985\times10^{29}[/tex]
Dipole Moment = 6.77 Debye.
