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Massive transformers
duty cycle 15 % *225 A => 33 A *25 V = 800VA aprox.
But unfortunately it is a little bit lowe ... |
16-2-2004 at 10:04
by: rikkitikkitavi |
NaHSO4
hence the name "vitriol oil" ?
Interesting , that thing about FeSO4 becomes usefull. I ... |
16-2-2004 at 09:59
by: rikkitikkitavi |
NaHSO4
axehandle., FeSO4 decomposes into SO2.
You need Fe2(SO4)3 whcih decomposes into SO2 and SO3 when ... |
15-2-2004 at 12:18
by: rikkitikkitavi |
Massive transformers
In most EU countries cheap (chinese made) welding transformer can be bought for around
50-90 €, ... |
15-2-2004 at 12:12
by: rikkitikkitavi |
my boss asked me if I was a member of scimadness
no, but I dont access this site from work!!! Actually, I dont use my job computer to surf (that much ... |
14-2-2004 at 05:39
by: rikkitikkitavi |
my boss asked me if I was a member of scimadness
Well , I was asked if I was "rikkitikkitavi" at scimadness....He said he sometimes pop in ... |
14-2-2004 at 04:52
by: rikkitikkitavi |
Bismuth from its Subsalicylate (Pepto-Bismol®)
some lead/tin alloys for soldering and making of tin-caracters (I dont know the exact word, but you ... |
14-2-2004 at 04:45
by: rikkitikkitavi |
Nitric Acid
PVC is NOT resistant to concentrated nitric acid. It is resitant to cold conc sulfuric acid < 40 ... |
9-2-2004 at 11:03
by: rikkitikkitavi |
Nitric Acid
stainless steel ...
above 95 % aluminium..
/rickard |
7-2-2004 at 23:09
by: rikkitikkitavi |
NaHSO4
HSO4 pKa 2
HCOOH Pka 3,75
thus the reaction
Na-Fo + NaHSO4 => HFo + Na2SO4 has a pk of 1, ... |
4-2-2004 at 11:33
by: rikkitikkitavi |
NaHSO4
Polverone, actually , Na2SO4 shows very little solubility in water/EtOH solutions up to 30-40 % wate ... |
31-1-2004 at 09:56
by: rikkitikkitavi |
NaOH question
yes.
solid NaOH absorbs moisture, and when wet reacts with CO2 in the air to Na2CO3
, probably lea ... |
3-11-2003 at 10:09
by: rikkitikkitavi |
H2SO4
ok, now I am with you Cyclo...
No it is very difficult to do it at home , but I have a prospect ... |
25-10-2003 at 08:30
by: rikkitikkitavi |
H2SO4
intersting Cyclo. that you have had success with using only a foil used as a lid
(working as conde ... |
24-10-2003 at 09:54
by: rikkitikkitavi |
H2SO4
the battery acid is probably around 37 weight %.
The highest concentration achievable is 98 weig ... |
20-10-2003 at 09:10
by: rikkitikkitavi |
Ethylhydrogensulfate
bubbling Cl2 through H2SO3 (or rather a solution of SO2 in H2O, since H2SO3 exists only in small amo ... |
20-10-2003 at 09:05
by: rikkitikkitavi |
H2O2 from sodium percarbonate
how stable would H2O2 be in a Na2CO3 solution?
since H2O2 decomposition is catalyzed by OH- , wo ... |
10-10-2003 at 09:19
by: rikkitikkitavi |
unconventional sodium
exactly!
it is the molecule itself that is solvatized.
Also probably because sodium acetate i ... |
2-10-2003 at 09:27
by: rikkitikkitavi |
unconventional sodium
dont think it would help to dissolve sodium acetate in ether , since it is not ionized in this solut ... |
30-9-2003 at 11:26
by: rikkitikkitavi |
Oleum prep
there is no problem heating dry KHSO4 , but you have to do it gently so there is no temperature grad ... |
13-9-2003 at 23:55
by: rikkitikkitavi |
A remarkable discovery...
in sweden we can buy CaC2 in well stocked hardware stores.
Its main use is for carbide lamps, but ... |
1-9-2003 at 11:40
by: rikkitikkitavi |
electrolytic manufacturing of HNO3 from Ca(NO3)2
thanks for the advice about the clogging,which I think is going to be the main problem.theoretic, bu ... |
12-8-2003 at 04:06
by: rikkitikkitavi |
electrolytic manufacturing of HNO3 from Ca(NO3)2
Theoretic, solubility of Ca(OH)2 in 5M CaN solution is very low...so you wont dissolve 0,2 g/l.
... |
8-8-2003 at 10:26
by: rikkitikkitavi |
electrolytic manufacturing of HNO3 from Ca(NO3)2
I was letting my mind play (tricks) this sunny evening at my balcony...
If you have a diaphragm c ... |
6-8-2003 at 10:28
by: rikkitikkitavi |
Sodium by chemical methods
I think that it is worth mentioning that the process of production of Na,K is quite well described i ... |
29-7-2003 at 00:33
by: rikkitikkitavi |
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