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A mixture of 0.100 mol of N2 and 0.200 mol of O2 is collected over H2O at an...
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Since the gasses are collected at atmospheric pressure the total pressure of the gaseous phase is 750mmHg.
At this temperature H2O exerts a pressure of 22mmHg. So the rest is exerted by `O_2 ` and `N_2` .
Pressure by `O_2` and `= 750-22 = 728mmHg`
Amount of `O_2` moles in the mix `= 0.2`
Amount of `N_2 ` moles in the mix `= 0.1`
Assume that `N_2` and `O_2 ` does not react with each other at the given conditions.
Partial pressure = mole fraction*Pressure
`P_(O_2) = (0.2)/(0.1+0.2)xx728`
So the answer is 485.33mmHg.
Posted by jeew-m on August 21, 2013 at 5:02 AM (Answer #1)
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