Question

1 multiple choice 1 point
what type of compound will be most soluble in water?
both of these
nonpolar
polar
neither of these

2 true or false 1 point
water is the solute in an aqueous solution.
true
false

3 true or false 1 point
solutions can be formed with gaseous solvents.
true
false

Explanation:

Question 1

Step1: Recall solubility rule

The principle "like dissolves like" applies. Water is a polar molecule. Polar compounds tend to dissolve in polar solvents, and nonpolar in nonpolar.

Step2: Evaluate options

• "both of these": Nonpolar doesn't dissolve well in water, so no.
• "nonpolar": Nonpolar and water (polar) don't mix well, so no.
• "polar": Polar compounds dissolve in polar water, so this is correct.
• "neither of these": Incorrect as polar does dissolve.

Step1: Define solute and solvent

In an aqueous solution, the solvent is the substance in greater amount (water, usually), and the solute is the dissolved substance.

Step2: Evaluate the statement

Water is the solvent, not the solute, in an aqueous solution. So the statement is false.

Step1: Recall solution definitions

A solution is a homogeneous mixture. Solvents can be gaseous (e.g., air, where nitrogen is solvent, other gases solutes).

Step2: Evaluate the statement

Solutions with gaseous solvents (like gas-gas solutions) exist, so the statement is true.

Answer:

C. polar

Question 2