The Boiling Point of Ethyl Alcohol is_________?
Correct answer: A. 78°C
- A. 78°C
- B. 58°C
- C. 73°C
- D. 56°C
Explanation
Ethyl alcohol, or ethanol, boils at about 78°C at standard atmospheric pressure because its vapour pressure becomes equal to atmospheric pressure at this temperature. The likely mistake is 56°C, which is close to the boiling point of some other organic liquids such as acetone.
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About Properties of Liquids
Liquid behavior depends on intermolecular forces, which produce surface tension, viscosity, capillary action and a definite volume without a fixed shape. The topic also covers vapor pressure, evaporation, boiling point and the effect of temperature and external pressure, while distinguishing evaporation at the surface from boiling throughout the liquid.
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