
Concept explainers
Interpretation:
The partial pressures of each gas have to be calculated.
Concept Introduction:
Dalton’s law of partial pressures for a mixture containing three gases can be expressed as-
Where the pressures P1, P2, and P3 represents the partial pressures of each gas. Each gas is responsible for the total pressure.
Where ntotal is the sum of the numbers of moles of the gases in the mixture.

Answer to Problem 5RQ
The partial pressure of CO2, O2 and N2 in the mixture is 1266.7 torr, 2533.33 torr and 3800 torr respectively.
Explanation of Solution
Given Information: n1 = 1.0 mole, n2 = 2.0 mole and n3 = 3.0 mole
Total pressure = 10.0 atm
n1 and P1 for CO2
n2 and P2 for O2
n3 and P3 for N2
Total number of moles ‘ntotal’ = (1.0 + 2.0 + 3.0) mol = 6.0 mole
The partial pressure of CO2 in the mixture:
The partial pressure of O2 in the mixture:
The partial pressure of N2 in the mixture:
Chapter 13 Solutions
World of Chemistry, 3rd edition
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