Question

question 19 (5 points)
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an aqueous solution
a) must contain three or more substances.
b) is a single - phase heterogeneous mixture.
c) has water as the solute.
d) has water as the solvent.

Explanation:

• Option A: An aqueous solution can have two substances (solute + water as solvent), so it doesn't need three or more. Eliminate A.
• Option B: A solution (including aqueous) is a homogeneous mixture, not heterogeneous. Eliminate B.
• Option C: In an aqueous solution, water is the solvent, not the solute. The solute is the dissolved substance. Eliminate C.
• Option D: By definition, an aqueous solution is a solution where water is the solvent (the substance in which the solute dissolves). This matches the definition.

Answer:

D. has water as the solvent.