Question

question 9 (2 points) which of the following substances are completely miscible? a) water and oil b) ethanol and water c) oil and milk d) gasoline and water

Explanation:

• Option a: Water (polar) and oil (non - polar) are immiscible, they separate.
• Option b: Ethanol (has - OH group, polar) and water (polar) can form hydrogen bonds, so they are completely miscible in all proportions.
• Option c: Oil (non - polar) and milk (an emulsion, not a simple miscible pair) are not completely miscible.
• Option d: Gasoline (non - polar) and water (polar) are immiscible.

Answer:

b) ethanol and water