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Interpretation:
The fact that the boiling temperature of water less than 100 °C at high altitudes have to be explained.
Concept Introduction:
The boiling point is a characteristic temperature of a liquid when the vapor pressure of the liquid is equal to atmospheric pressure.
Answer to Problem 32A
At higher altitudes the atmospheric pressure is lower than 1 atm pressure. So, less temperature is required to reach that pressure thus the liquid boils at lower temperature. Normally water boils at 100 °C but at altitudes water boils at less than 100 °C. Water boils before it reaches at 100 °C.
Explanation of Solution
The boiling point is a characteristic temperature of a liquid when the vapor pressure of the liquid is equal to atmospheric pressure. At higher altitudes, the atmospheric pressure is lower than 1 atm pressure. So, less temperature is required to reach that pressure thus the liquid boils at lower temperature. Normally, water boils at 100 °C but at altitudes water boils at less than 100 °C. Water boils before it reaches at 100 °C.
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