0 Members and 1 Guest are viewing this topic.
I think it is the sort of thing that can, and does, happen quite frequently. But it is usually a matter of an explanation or an interpretation or a "theory" fitting a result or fact rather than the observation fitting "existing facts".Example 1: Air pressure: Sir Isaac Newton thought about air pressure, and thought that its elastic behaviour must be due to forces of repulsion between particles of air. We now know that there are no such repulsive forces, and that the air pressure is due to fast moving gas particles colliding with the surfaces where the pressure is detected.
I haven't tried the candle in the bottle experiment. It is interesting to think about though.Simplifying things a bit, if one had:CnH2n + 1.5nO2 --> nCO2 + nH2OSo, after everything cools down, one ends up with about 2/3 as much CO2 as the quantity of O2 that one began with.So, if one began with 20% oxygen, one would expect the water to raise by 7%. I presume a chunk of the difference (if any) would be due to the much higher solubility of CO2 in water than O2. Can CO2 escape from the enclosure through the water?I would be curious if you would see a difference in the level of the water if you ran the experiment in an acidic water bath vs a basic water bath. You could use Sodium Bicarbonate, for one sample, but I'd choose a different base.http://www.engineeringtoolbox.com/gases-solubility-water-d_1148.html(oops, had the formula off, corrected it to reflect 2/3 ratio CO2 to O2).