Question

what would happen to the boiling point of water at 8000 above sea level, where the air pressure is lower?

Answer 1

The boiling point will be lower, because water boils when its vapour pressure is equal to atmospheric pressure. If you are at 8 000 m above sea level, the air pressure is lower than one atmosphere and the equilibrium between the water and air pressures will be reached before.

Answer 2

The boiling point will decrease to 73.3°C

Step-by-step explanation:

Atmospheric pressure decreases with elevation and the boiling point of water is directly related to atmospheric pressure, it rapidly drops as elevation increases too, approximately 1°C for every 300 meters.