Which pair of compounds will form a solution?Benzene (C6H6) and hexane (C6H14)Na2SO4 and benzene (C6H6)NaCl and hexane (C6H14)H2O and CCl4More than one of

the combinations above will form solutions.

Kelly, I don't get it. How does Na2SO4 fit in. How does NaCl fit in. Where do they go? And where does the H2O go? When you write Pair of compounds, I see benzene and hexane but that leaves out Na2SO4.

More than one of the combinations above will form solutions. Specifically, benzene (C6H6) and hexane (C6H14) will form a solution, as well as NaCl and hexane (C6H14).

To determine which pair of compounds will form a solution, we need to understand the nature of solubility and how it applies to the given compounds.

Solubility refers to the ability of a substance, known as the solute, to dissolve in another substance, known as the solvent. In order for a compound to dissolve, its intermolecular forces need to interact favorably with the intermolecular forces of the solvent.

Let's analyze each pair of compounds and determine if they can form a solution:

1. Benzene (C6H6) and hexane (C6H14):
Both benzene and hexane are nonpolar compounds. Since "like dissolves like," nonpolar solvents typically dissolve nonpolar solutes. Therefore, benzene and hexane can dissolve in each other, forming a solution.

2. Na2SO4 and benzene (C6H6):
Na2SO4 is an ionic compound consisting of sodium ions (Na+) and sulfate ions (SO4²-). Benzene is a nonpolar compound. Ionic compounds generally do not dissolve in nonpolar solvents, as their intermolecular forces are not compatible. Therefore, Na2SO4 will not dissolve in benzene.

3. NaCl and hexane (C6H14):
NaCl is also an ionic compound, composed of sodium ions (Na+) and chloride ions (Cl-). Similarly to the previous case, hexane is nonpolar. Therefore, NaCl will not dissolve in hexane.

4. H2O and CCl4:
H2O (water) is a polar compound due to its bent molecular shape and presence of electronegative oxygen atoms. CCl4 (carbon tetrachloride) is a nonpolar compound. Polar solvents can dissolve polar solutes, but they usually cannot dissolve nonpolar solutes effectively. Therefore, H2O will dissolve, but minimally, in CCl4.

Based on the explanations above, the only pair that can form a solution is benzene (C6H6) and hexane (C6H14). The other combinations will not form solutions.