Which pairs of liquids will be soluble in each other? (a) H2 O and CH3 CH2 CH2 CH3 (b) C6 H6 (be

step 1 In answering this question we're going to be following a guideline which states that like dissol

Which pairs of liquids will be soluble in each other? (a) H2...

Which pairs of liquids will be soluble in each other? (a) $\mathrm{H}_{2} \mathrm{O}$ and $\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{CH}_{2} \mathrm{CH}_{3}$ (b) $\mathrm{C}_{6} \mathrm{H}_{6}$ (benzene) and $\mathrm{CCl}_{4}$ (c) $\mathrm{H}_{2} \mathrm{O}$ and $\mathrm{CH}_{3} \mathrm{CO}_{2} \mathrm{H}$

Which pairs of liquids will be soluble in each other?
(a) $\mathrm{H}_{2} \mathrm{O}$ and $\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{CH}_{2} \mathrm{CH}_{3}$
(b) $\mathrm{C}_{6} \mathrm{H}_{6}$ (benzene) and $\mathrm{CCl}_{4}$
(c) $\mathrm{H}_{2} \mathrm{O}$ and $\mathrm{CH}_{3} \mathrm{CO}_{2} \mathrm{H}$

Key Concepts

Polarity

Polarity refers to the distribution of electric charge around a molecule, which influences its ability to interact with other molecules. Polar molecules, having distinct positive and negative ends, tend to dissolve well in other polar substances due to dipole-dipole interactions, while nonpolar molecules dissolve better in nonpolar solvents where only dispersion forces are significant.

Hydrogen Bonding

Hydrogen bonding is a specific type of strong dipole-dipole interaction that occurs when hydrogen is covalently bonded to highly electronegative atoms such as oxygen, nitrogen, or fluorine. This interaction plays a critical role in the solubility of compounds that can both donate and accept hydrogen bonds, allowing them to mix well with other hydrogen-bonding substances.

Van der Waals Forces

Van der Waals forces, particularly dispersion forces, are weak intermolecular forces that arise from temporary fluctuations in electron density. These forces are most relevant in nonpolar molecules, where they are the primary interactions responsible for holding the molecules together, affecting the solubility in nonpolar solvents.

Solubility Rule 'Like Dissolves Like'

The solubility rule 'like dissolves like' is a key principle in chemistry that indicates substances with similar intermolecular forces and polarities are more likely to dissolve in each other. This rule is essential for predicting and understanding the solubility behavior of various liquid pairs based on their molecular characteristics.

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