Quote: Originally posted by jsc | The apparatus is a graduated column with a shelf on the top. The bottom is open and you put it in water. The getter is on the shelf. As the oxygen is
consumed by the getter, water rises into the column and by the height of the water you can tell how much oxygen was in the column.
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I don't know how fast CuCl solution would work in that case. The gasses may diffuse too slowly into the solution for this to work in a timely manner.
I know that every time I open the bottle, there is a sucking sound as more air rushes inside.
Are you accounting for the weight of the water as it rises in the tube? In other words, as the water gets "sucked" up the tube, above the level of
the water outside, the gas pressure inside the tube drops, skewing the results. This effect can be minimized by simply adding water outside the tube
until the two water levels are the same height.
[Edited on 11-14-2014 by WGTR] |