Which of the following is the correct order of increasing boiling point?
Correct answer: B. Methanol < Ethanol
- A. Methanol > Ethanol
- B. Methanol < Ethanol
- C. Methanol = Ethanol
- D. None of these
Explanation
The boiling point of alcohols increases as the size of the alcohol molecule increases. This is because larger molecules have more electrons and protons, which leads to stronger intermolecular forces that require more energy to break apart. Therefore, out of the options given, the correct order of increasing boiling point would be Methanol < Ethanol.
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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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