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Extraction of eugenol
Looking on the bright side, you have removed any carboxylic acid impurities from the stuff. |
31-10-2006 at 10:05
by: unionised |
Sulfuric Acid Production: Revisited
Err, is any of this chemistry? |
31-10-2006 at 10:02
by: unionised |
Sulfuric Acid Production: Revisited
Last time I checked the electrolysis of dilute sulphuric acid to give H2 and O2 was a standard high ... |
29-10-2006 at 13:21
by: unionised |
Sulfuric Acid Production: Revisited
"Good try, but won't work. The reduction potential is higher for the H+ to be turned into H2, rather ... |
29-10-2006 at 02:07
by: unionised |
NaI from I2. (help?)
Reaction with iron filings followed by addition of NaOH to ppt Fe(OH)2 should work. |
28-10-2006 at 05:41
by: unionised |
Sulfuric Acid Production: Revisited
So far as I'm aware threre is not "society for the prevention of cruelty to alcohols" so if they get ... |
25-10-2006 at 10:20
by: unionised |
Isolating Methyl Salicylate
Using an insoluble base like CaCO3 works too. |
21-10-2006 at 03:02
by: unionised |
Chromium and nickel separation
Why add aluminium?
Slow addition of NaOH should ppt the Cr(III) first. If the colour change is obvi ... |
21-10-2006 at 02:58
by: unionised |
Probability of life??
Just for the record, getting a 100 residue chain isn't necessarily a 100 step reaction.
The last st ... |
20-10-2006 at 07:22
by: unionised |
CHCl3 + Mg?
An interesting aspect of magnesium chemistry is that mixtures of it with halocarbons like chloroform ... |
18-10-2006 at 10:43
by: unionised |
extraction
The salt might be there to reduce the solubillity of the dimethoxybenzene. OTOH, it might be there t ... |
17-10-2006 at 10:43
by: unionised |
Chemistry Questions Help fast
Even without a textbook (and, presumably, without a library) I can't see why the teacher would have ... |
16-10-2006 at 09:56
by: unionised |
demineralizer resin
The H+ concn might be pretty low, but the Na+ concentration is even lower so the Na+ will leach out. ... |
16-10-2006 at 09:51
by: unionised |
Mysterious bottle
Well, to me it looks like a sprayer like this one (Sorry, but this is the best picture I could find ... |
12-10-2006 at 10:51
by: unionised |
Potassium Hydroxide Synthesis
limestone + vinegar -> Ca acetate
Ca acetate + drain cleaner-> Ca(OH)2
Ca(OH)2 + K2CO3 -> ... |
11-10-2006 at 21:53
by: unionised |
Perkin Elmer 8500.
The lab I work in uses both HP and PE GC kit. IIRC it was a PE instrument they bought most recently. ... |
9-10-2006 at 10:46
by: unionised |
Drying wet acetic acid.
What?
Nobody mentioned freezing out the bulk of the acid, pouring off the water/ acid mix then re ... |
9-10-2006 at 10:27
by: unionised |
German Pyrex Beaker???
"Haha...I love nationalism!"
Aparently.
"Some of you guys that are saying German glassware is TH ... |
8-10-2006 at 00:46
by: unionised |
Cell a mystery
I think this is one of the most important lines in that article;
"We are offering to risk-share on ... |
8-10-2006 at 00:08
by: unionised |
for all those who bit my head off
Did that rant mean anything? It's a bit hard to tell because there's no punctuation and no clearly d ... |
7-10-2006 at 03:44
by: unionised |
MnO2 -> MnSO4; What is the best route?
"hydrogen peroxide and acid will very quickly reduce MnO2 to Mn2+. "
Sure about that ?
Last time I ... |
3-10-2006 at 09:51
by: unionised |
Smokin' nuts in concrete!
"He couln't identify the 'nuts' that were smoking. I'm thinking acorns or hickory nuts"
"I can co ... |
3-10-2006 at 09:37
by: unionised |
MnO2 -> MnSO4; What is the best route?
"1) The direct reaction of H2SO4 with MnO2 does not happen
2) MnCl2 will not become MnSO4 if you ... |
2-10-2006 at 10:12
by: unionised |
Absorption of Nitrogen Dioxide
One other thing that didn't get a mention was to use lots of water.
Why are you doing this? If you ... |
28-9-2006 at 08:59
by: unionised |
pH indicator for portland cement.
The paper on ethanol/ ammonium sulphate looks interesting and my best guess is that it would work fo ... |
27-9-2006 at 09:01
by: unionised |
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