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A Gas mixture containing 32.9 kPa total pressure is composed of Hydrogen, Oxygen, and Nitrogen gas. If Po= 0.0652 atm and Pn= 172.6 mm Hg. What is the partial pressure of Hydrogen (PH)?

A Gas mixture containing 32.9 kPa total pressure is composed of Hydrogen, Oxygen, and Nitrogen gas. If Po= 0.0652 atm and Pn= 172.6 mm Hg. What is the partial pressure of Hydrogen (PH)?

Solutions

Expert Solution

Partial pressures follow the following rules: sum of Pi = PTot Pi = xiPTot where xi is the mole fraction of i (ni/ntot) and you can use IGL or CGL independently for each gas so that PiVTot = niRT

 

So in this problem you know that PHyd = PTot - POxy - PNit    

This is actually more of a conversion problem because you have to put all the pressures in the same units. Use standard atmospheric pressure to relate the units: 101.3 kPa = 1 atm = 760 mmHg.

760mmahg

Nipun Maity answered 2 years ago
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