What is the boiling point of ethanol during distillation?

Question

BlackTom AI · Accepted Answer

In this question, we’re asked to identify the boiling point of ethanol during distillation under normal atmospheric conditions.
Option a: 64°C. This is not consistent with the known boiling point of ethanol, which is higher than 60°C. 64°C would be closer to the boiling point of some other liquids, but not ethanol, so this choice is incorrect.
Option b: 120°C. This value is far above ethanol’s boiling point at standard pressure. Ethanol does not boil near 120°C when heated in an ordinary distillation setup, so this is not correct.
Option c: 78°C. This matches the widely accepted boiling point of ethanol at 1 atm (approximately 78.3°C). Since distillations are typically performed at or near atmospheric pressure, this is the correct figure for ethanol’s boiling point.
Option d: 100°C. This is the boiling point of water at 1 atm, not ethanol. Confusing the two is a common error, but it misidentifies ethanol’s characteristic boiling point.
Overall, the reasoning shows that only option c aligns with the standard boiling point of ethanol, while the other values contradict established thermodynamics for ethanol at atmospheric pressure.

What is the boiling point of ethanol during distillation?单项选择题

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What is the boiling point of ethanol during distillation?

What is the boiling point of ethanol during distillation?

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