The bond angle in the H₂O molecule is given as 104° and the resultant dipole moment as μ = 1.84 D.

(a) By an appropriate geometric calculation, determine the value of the H—O bond dipole in H₂O.

(b) Use the same method as in part (a) to estimate the bond angle in H₂S, given that the H—S bond dipole is 0.67 D and that the resultant dipole moment is μ = 0.93 D.

(c) Refer to Figure 10-16. Given the bond dipoles 1.87 D for the C—Cl bond and 0.30 D for the C—H bond, together with μ = 1.04 D, estimate the H—C—Cl bond angle in CHCl₃.

Figure 10-16

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CI (a) CC14: a nonpolar molecule (b) CHCl3: a polar molecule