Question

Which of the following best describes the difficulty in breathing as one climbs to higher altitudes?

• A. Henry’s law
• B. Raoult’s law
• C. Dalton's law
• D. Charle's law

Answer 1

The correct option is A Henry’s law

Henry’s law states that the partial pressure of a gas in vapor phase varies directly with its mole fraction in the solution. At higher altitudes the partial pressure of $O_2$ decreases hence the decrease in its concentration which causes difficulty in breathing.