MCAT General Chemistry Question 122: Answer and Explanation
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Question: 122
2. Which phases of solvent and solute can form a solution?
I. Solid solvent, gaseous solute
II. Solid solvent, solid solute
III. Gaseous solvent, gaseous solute
- A. I and II only
- B. I and III only
- C. II and III only
- D. I, II, and III
Correct Answer: D
Explanation:
All three choices can make a solution as long as the two components create a mixture that is of uniform appearance (homogenous). Hydrogen in platinum is an example of a gas in a solid. Brass and steel are examples of homogenous mixtures of solids. The air we breathe is an example of a homogenous mixture of gases; while these are more commonly simply referred to as mixtures, they still fit the criteria of a solution.