Worksheet: Dipole Moments

In this worksheet, we will practice calculating the dipole of a molecule using the relative positions of the atomic partial charges.

Q1:

Ammonia has a bond angle of 107.0 and an overall dipole moment of 1.47 D. Calculate, to 3 significant figures, the dipole moment of each NH bond.

Q2:

Hydrogen sulfide has a bond angle of 92.1 and an overall dipole moment of 0.970 D. Calculate, to 3 significant figures, the dipole moment of each SH bond.

Q3:

Water has a bond angle of 104.5 and each OH bond has a dipole moment of 1.50 D. Calculate, to 3 significant figures, the total dipole moment of the water molecule.

Q4:

Which of these compounds has a nonzero dipole moment?

  • AWater
  • BCarbon dioxide
  • CMethane
  • DBoron trifluoride

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