Question

mixtures quiz cp chemistry a o / module 2: basics of matter 2. which of these mixtures could be separated using distillation? select all that apply. a solution of rubbing alcohol and water. a solution of salt and water. an alloy of copper and gold. a solution of sugar and water.

Explanation:

Step1: Understand distillation principle

Distillation separates mixtures based on different boiling - points.

Step2: Analyze each option

• A solution of rubbing alcohol and water: Rubbing alcohol (isopropyl alcohol) and water have different boiling points, so can be separated by distillation.
• A solution of salt and water: Water boils off leaving salt behind, can be separated by distillation.
• An alloy of copper and gold: Alloys are solid - solid mixtures, distillation is for liquid mixtures or mixtures where one component can be vaporized, so this can't be separated by distillation.
• A solution of sugar and water: Water can be vaporized and separated from sugar by distillation.

Answer:

A. A solution of rubbing alcohol and water.
B. A solution of salt and water.
D. A solution of sugar and water.