In a system for separating gases a tank containing a mixture of hydrogen and carbon dioxide is connected to a much larger tank where the pressure is kept very low. The two tanks are separated by a porous membrane through which the molecules must effuse. If the initial partial pressures of each gas is 5.00, what will be the mole fraction of hydrogen in the tank after the partial pressure of carbon dioxide has declined to 4.50? a. 52.1 %. b. 37.2 %. c. 27.4 %. d. 32.1 %. e. 4.68 %.

Question

Magdalena Hess

Chemistry

27 February, 11:11

In a system for separating gases a tank containing a mixture of hydrogen and carbon dioxide is connected to a much larger tank where the pressure is kept very low. The two tanks are separated by a porous membrane through which the molecules must effuse. If the initial partial pressures of each gas is 5.00, what will be the mole fraction of hydrogen in the tank after the partial pressure of carbon dioxide has declined to 4.50? a. 52.1 %. b. 37.2 %. c. 27.4 %. d. 32.1 %. e. 4.68 %.

+2

Answers (1)

Know the Answer?

Joslyn Ramirez · Answer 1

A 52.63%

Explanation:

The mole fraction of each gas is equivalent to the ratio of the partial pressure as indicated below:

Partial pressure of Hydrogen = 5.00

Partial pressure of Carbon-dioxide = 4.50

Total gas pressure = 9.50

Mole fraction of Hydrogen = Partial pressure of Hydrogen / Total gas pressure

= 5.00/9.50

= 0.5263

= 52.63%