Okay, the title was supposed to make most people have a weird reaction, although the subject I'm talking about is "Analytical Chemistry."
My final project is in the process, and I know that many of you are old men, but hopefully some of you are taking the class or even remember...
Now the question is about "Simple Weight Loss," I have absolutely what the department means by this.
I have some freshly squeezed strained grapefruit juice, a mass, and some sodium bicarbonate (baking soda), a flask, and a pipet. That's all I know, and I'm supposed to find the concentration of citric acid in the juice. That's all the information I know, a google comes up with diet plans, and quite a bit of biological stuff, which isn't what I need.
Please don't recomend titration, that can't be used for this part of it, in fact "Simple Weight Loss" and some equipment is all I have to go off of. Please help =)
Thanks for the link, that is titration using an electronic probe, nothing out of the ordinary. This concept that I have no clue about is really supposed to be quite simple, not a regular concept like titration (although multiple acids at once sounds tricky to say the least).
I think it's quite logical to assume the lost weight would be a gas, it probably would form carbon dioxide gas. Let me get that equation scratched out.
So I think the idea is supposed to be how much mass gets lost by the CO2 gas bubbling out. This should be in proportion to how much citric acid there was to begin with. I suspect it will be more complicated than that, because citric acid and bicarbonate are weak acid and base respectively, so they don't dissociate as nearly completely as if you were working with something like hydrogen chloride and sodium hydroxide. You probably have to mess with dissociation constants, which I haven't done in a long, long time.