Does #H_2O# have a greater dipole moment than #H_2S#?

Answer 1

#"My word.........."#

This site reports the dipole moment of water at #1.8546*"Debye"#.

And this site reports the dipole moment of hydrogen sulfide at #0.97*"Debye"#.

Of course, you don't have to remember these values, but you might be expected to interpret them rationally. Oxygen is more electronegative than sulfur, and thus there should be a greater polarization of electron density, a greater charge separation, in the water molecule as compared to the hydrogen sulfide molecule.

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Answer 2

Henry Antrim

Yes, H₂O has a greater dipole moment than H₂S.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.