Impossible chemistry

2. A eudiometer contains 45 ml of oxygen when the barometer reading is 731.7 mm and the temperature is 27* C . The water level inside the tube is 68mm higher than that outside . What volume does the dry oxygen occupy at S.T.P?

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  1. It is not impossible.

    Find the pressure of the O2 collected, you know the volume.


    You get the water vapor pressure from a chart.

    Now, knowing the pressure, temp, and volume of the O2, convert it to volume at StP

    P1V1/T1=P2V2/T2 solve for V2

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