Physics Experts!
<div class="IPBDescription">NEED HELP!</div> I'v got to do this analysis of how the electrical resistance changes through time on coke. This means that I need to check the resistance of the coke every hour or so, and see the difference. I found it that it made a Gauss Curve, but I can't explain why!!!!!
My hypothesis is that the movement of the gas, as it leaves the can, increases the resistance, and the settling down of the movement reduces.
ANY HELP WOULD BE TREMENDOUSLY APPRECIATED
My hypothesis is that the movement of the gas, as it leaves the can, increases the resistance, and the settling down of the movement reduces.
ANY HELP WOULD BE TREMENDOUSLY APPRECIATED
Comments
Nontheless, I usually go here for physics help.
<a href='http://hyperphysics.phy-astr.gsu.edu/hbase/hframe.html' target='_blank'>Hyperphysics</a>
Luckily I do both, but only on a highschool level...
My educated guess goes like this.
Coke is an acidic substance due to dissolved CO2 gas.
CO2 (aq) + H2O (l) <--> HCO3 (aq) + OH(aq)
Now, all acidic or basic substances conduct electricity due to the formation of Ions, the Hydroxide and the hydrogen carbonate indicated above. When under pressure, the dissolved CO2 in the form of hydrogen carbonate is in equilibrium. When the can is exposed to air and the pressure is removed, the reverse reaction occurs forming water and gaseous carbon dioxide.
Now, Pure water cannot conduct electricity. Because the ions are back reacting to form water and carbon dioxide, the acidity and hence the electrical conductivity of the coke fall off. Once all the HCO3 and OH has back reacted to CO2 and H2O, acidity will cease as will electrical conductivity.
I'm not sure what a gauss curve is though, perhaps you could show my one, but based on the information given to me thats what I've come up with.
Hope this helps you out somewhat...