Gases - Dalton's Law of Partial Pressures

Question 1

dalton’s law of partial pressures

Answer 1

• Ptotal = Pa + Pb + Pc + …………..
• the total pressure of a mixture of gases is equal to the sum of all of the partial pressures of each gas in the mixture
• gases flow spontaneously from a region of higher partial pressure to a region of lower partial pressure
• important in respiration

Question 2

a flask contains xenon, oxygen and chlorine gases. the partial pressures of each are 15.6 Torr, 13.2 Torr, and 8.3 Torr respectively. what is the total pressure in the flask?

Answer 2

• total pressure = xenon + oxygen + chlorine

- 15.6 + 13.2 + 8.3 = 37.1