Answer:
The mol fraction of the hydrogen gas = 0.526
Explanation:
Step 1: data given
mixture of hydrogen and carbon dioxide
the initial partial pressures of each gas is 5.00 atm
the partial pressure of carbon dioxide has declined to 4.50 atm
Step 2: Calculate total pressure
Total pressure = 4.5 atm + 5.0 atm
Total pressure = 9.5 atm
Step 3: Calculate mol fraction
Partial pressure = mole fraction * total pressure
Mol fraction = partial pressure / total pressure
Mol fraction carbon dioxide = 4.5 atm / 9.5 atm
Mol fraction carbon dioxide = 0.474
Mol fraction of hydrogen = 1 - 0.474 = 0.526
The mol fraction of the hydrogen gas = 0.526
