Question

For each solute, identify the better solvent: water or carbon tetrachloride. Br2, KF, CH2O, C6H14

Answer 1

Bromine (Br2) and hexane (C6H14) are nonpolar and more soluble in carbon tetrachloride, while potassium fluoride (KF) and formaldehyde (CH2O) are polar and more soluble in water.

Step-by-step explanation:

To determine whether each solute will be better dissolved in water or carbon tetrachloride, we need to consider the polar or nonpolar nature of the solvent and the solute. The principle of "like dissolves like" is key, meaning polar solutes dissolve best in polar solvents, while nonpolar solutes dissolve best in nonpolar solvents.

• Bromine (Br2) is nonpolar and thus would be more soluble in the nonpolar solvent, carbon tetrachloride.
• Potassium fluoride (KF) is an ionic compound and would be more soluble in the polar solvent, water.
• Formaldehyde (CH2O) is polar due to the carbonyl group and would be more soluble in the polar solvent, water.
• Hexane (C6H14) is nonpolar and would be more soluble in the nonpolar solvent, carbon tetrachloride.

To summarize, the best solvent for each solute based on their polarities would be carbon tetrachloride for Br2 and C6H14, and water for KF and CH2O.

Answer 2

Solubilty of components affect by polarity. Simlar substance dissovle similar subtance. So polar substance dissolve polar substance and nonpolar substance dissolves nonpolar substance. Since water is polar and carbon tetracholride are non polar

Br2 dissolves in carbon tetracholride because it is non polar

KF in water because it is polar

CH2O in water because it is polar

C6H14 is carbon tetracholride because it is non polar