how is that the one thing may university makes easy
The chem department loves us
Thereās a reason I love it here. The chem department literally loves us
by the way magnus that was an alice in wonderland reference i was not infact mocking you
this makes delightfully little sense to anyone else
benguinedās post saying that nobody needs a youtube.com link having 9 people clicking on the link still tickles me
1 Like
we had too much fun in cookie thread today this thread is dying
2 Likes
the would you press the button era feels like a different time
1 Like
oh hey they uploaded the set i modded for a week ago! (they didnāt actually. iām just saying this is that set for comedic effect. hahaHA!)
Cookie thread āpopping offā
Everyone I know got super implausible high numbers for both the copper and phosphate contents of their salts. Are we all just bad chemists
1 Like
no theyāre trying to poison you
well we know who wasnt a copper merchant in their past lives
Whereās the point of failure here???
- Create stock solution of copper sulfate
- Create serial dilutions of stock solution
- Dissolve set amount of copper salt in ammonia/sulfate
- Measure the absorbance (colour) of the copper salt solution and compare it to the standard copper sulfate to see how much is in it
When I looked at the solution, it looked slightly lighter than my first dilution, which is where the absorbance measurements came out, so it wasnāt an instrument issue
I suppose the easiest explanation is that thereās something other than copper absorbing at that wavelength? But what the fuck else
1 Like
I got 99.3% copper. I know my salt was high in copper cause it was a pretty blue-blue not a green-blue. But it was not hta tfucking high.
My phosphate numbers are also way off but thereās more points of failure there
1 Like
The phosphate we measured by reacting the phosphate with lead and then weighing the reuslting precipitate, itās super easy to get other shit in there if itās just solids. The copper stuff has to absorb light at the same wavelength as copper sulfate and IDK WTF in there would. Ammonia shouldnāt. Would phosphate?
iām not appreciated in my time
1 Like
PHOSPHATE ISNāT FUCKING BLUE
1 Like