melon
Harmless
Posts: 1
Registered: 30-3-2005
Member Is Offline
Mood: okay
|
|
hydrated magnesium sulphate synthesis
okay here's the deal:
i need to plan and synthesise hydrated magnesium sulphate crystals from magnesium carbonate.
i am given MgCO3, H2SO4, distilled water, ethanol, filter paper (and other measuring thingos)
how the hell do i do this? [i needto know before monday!]
wha?
|
|
|
Organikum
resurrected
Posts: 2337
Registered: 12-10-2002
Location: Europe
Member Is Offline
Mood: frustrated
|
|
Shouldn´t be here I believe but wtf..
Add the carbonate to diluted H2SO4, filter, wash the crystals with ethanol, done.
|
|
|
cyclonite4
Hazard to Others
Posts: 480
Registered: 16-11-2004
Location: is unknown
Member Is Offline
Mood: Amphoteric
|
|
OMG... is this a big coincidence, OR do you go to the EXACT same school as me. I have the EXACT practical due to be planned by the EXACT same date.
Let me guess... the H2SO4 they are supplying is.... 1 M? Thats what I got. How did you find this forum... maybe I forgot to sign out? 
\"It is dangerous to be right, when your government is wrong.\" - Voltaire
|
|
|
12AX7
Post Harlot
Posts: 4803
Registered: 8-3-2005
Location: oscillating
Member Is Offline
Mood: informative
|
|
| Quote: | Originally posted by melon
i need to plan and synthesise hydrated magnesium sulphate crystals |
Step 1. Get into car, start engine etc.
Step 2. Locate "Epsom Salts" at grocery store, drug store, etc.
Step 3. Open carton.
Synthesis complete 
Tim
|
|
|
cyclonite4
Hazard to Others
Posts: 480
Registered: 16-11-2004
Location: is unknown
Member Is Offline
Mood: Amphoteric
|
|
I already thought of that.
But this is a monitored synthesis thing, a teacher would likely notice you placing MgSO4.7H2O from an epsom salts packet into the sample bottle.  
\"It is dangerous to be right, when your government is wrong.\" - Voltaire
|
|
|
chloric1
International Hazard
Posts: 1142
Registered: 8-10-2003
Location: GroupVII of the periodic table
Member Is Offline
Mood: Stoichiometrically Balanced
|
|
Yep, maybe that is why the teacher picked such an easy synthesis to test your ethics and to see if you can complete a simple proceedure. If it helps
any sulfates really dont dissolve well in alcohol. I used espon salts in a sythesis and when the sulfates contaminated my product I dissolved in
denatured alcohol and had a nice sulfate deposit on the bottom. my product was reasonalby pure enough for my use but contained alchol of
crystalization. So, after that was gone, it took up water like a crack whore and
turned into a oatmeal like mash!
Oh yeah, if you all wondered what I was talking about, Magnesium bromide hexahydrate was my desired product. I have several pictures and I a
detailed account but I want to try a better yeilding synthesis first before I post my experiments.
[Edited on 3/31/2005 by chloric1]
Fellow molecular manipulator
|
|
|
![[*]](images/xpblue/default_icon.gif){kind=icon}
