Question
Chemistry Question on Colligative Properties
The boiling point of water decreases at high altitudes because
A
the atmospheric pressure is low
B
the temperature is low
C
the atmospheric pressure is high
D
the temperature is high
Answer
the atmospheric pressure is low
Explanation
Solution
The boiling point of a liquid is the temperature at which its vapour pressure becomes equal to the atmospheric pressure. At high altitudes the atmospheric pressure becomes low, hence the boiling point of water decreases.