a mixture of NO, CO2, and O2 gases has a total pressure of 2.5x10^3 torr. if the partial pressure of NO is 800 torr and CO2 is 600 torr, what is the partial pressure of O2?
Dr. Bob. Please help
You need to read about Dalton's Law. Dalton said that each gas of a mixture exerts its pressure independent of the others. Said another way,
Ptotal = Pagas + Pbgas + Pcgas + Pdgas.......
To find the partial pressure of O2 in the mixture, we can use Dalton's law of partial pressures. According to this law, the total pressure of a mixture of gases is equal to the sum of the partial pressures of each individual gas.
Given that the total pressure of the mixture is 2.5 x 10^3 torr, and the partial pressure of NO is 800 torr and CO2 is 600 torr, we can find the partial pressure of O2 by subtracting the sum of the partial pressures of NO and CO2 from the total pressure.
Partial pressure of O2 = Total pressure - Partial pressure of NO - Partial pressure of CO2
Partial pressure of O2 = 2.5 x 10^3 torr - 800 torr - 600 torr
Partial pressure of O2 = 2.5 x 10^3 torr - 1,400 torr
Partial pressure of O2 = 1,100 torr
Therefore, the partial pressure of O2 in the mixture is 1,100 torr.