Histopathology Board Practice Exam

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What is the boiling point of ethanol?

78.3 °C

The boiling point of ethanol is approximately 78.3 °C under standard atmospheric pressure. This value reflects the temperature at which the vapor pressure of ethanol equals the atmospheric pressure, allowing it to transition from liquid to vapor. Ethanol, a common alcohol used in various applications including beverages, antiseptics, and solvents, has a relatively low boiling point compared to many other organic compounds.

In the context of the options presented, this specific boiling point is characteristic of ethanol’s molecular structure, which consists of a hydroxyl group (-OH) that influences its physical properties. Understanding the boiling point of ethanol is not only significant for practical applications but also serves as a foundational concept in the study of thermodynamics and phase transitions in chemistry.

The other options do not accurately reflect the boiling point of ethanol.

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100 °C

95 °C

80 °C

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