13. Liquids, Solids & Intermolecular Forces

Determine if the compound of BCl₂F is polar or nonpolar.

Determine if phosphorus trihydride, PH₃, is polar or nonpolar.

Which of the following compounds is/are nonpolar?

I. COF₂                    II. ICl₂^–                    III. XeF₄                    IV. C₈H₁₈

Determine if disulfur dichloride, S₂Cl₂, is polar or nonpolar.

The molecule shown here is difluoromethane 1CH2F22, which is used as a refrigerant called R-32. (c) If the molecule is polar, which of the following describes the direction of the overall dipole moment vector in the molecule: (i) from the carbon atom toward a fluorine atom, (ii) from the carbon atom to a point midway between the fluorine atoms, (iii) from the carbon atom to a point midway between the hydrogen atoms, or (iv) from the carbon atom toward a hydrogen atom?

The molecules

have the same molecular formula (C3H8O) but different chemical structures. (b) Which molecule do you expect to have a larger dipole moment? [Sections 11.2 and 11.5]

Ethyl acetate, CH3CO2CH2CH3, is commonly used as a solvent and nail-polish remover. Look at the following electrostatic potential map of ethyl acetate, and explain the observed polarity.