Any clues on how to dissolve aluminium sulphate to make up a 1M stock solution? We already have some so i assume it can be done!
Rosalie
aluminium sulphate
hi,
are you sure you need 1M solution, recomended bench strength is 0.1M
Aluminium sulfate (18H2O):
Molecular weight: 666.45
Strength: 1M
Volume 0.5L
666.45*1*0.5 =333.225gr
Aluminium Sulfate (16 H2O)342.1
342.1*1*.5 = 171.05gr
,
Dissolve Aluminium sulfate in distil water and make up to 0.5L (or as much as you need).
Formulae to use it is M*Mr*V
M is molarity
Mr Molecular weight
V is volume
are you sure you need 1M solution, recomended bench strength is 0.1M
Aluminium sulfate (18H2O):
Molecular weight: 666.45
Strength: 1M
Volume 0.5L
666.45*1*0.5 =333.225gr
Aluminium Sulfate (16 H2O)342.1
342.1*1*.5 = 171.05gr
,
Dissolve Aluminium sulfate in distil water and make up to 0.5L (or as much as you need).
Formulae to use it is M*Mr*V
M is molarity
Mr Molecular weight
V is volume
Cheers Jazz
- Lyn
- Posts: 706
- Joined: 16 May 2006, 10:00
- Job Title: Lab Assistant (Technician)
- School: St. John's Catholic College
- Suburb: Darwin
- State/Location: NT
aluminium sulfate
RosalieM,
Aluminium Sulfate 0.1M
Dissolve 67g of aluminium sulfate in distilled water and make up to 1 litre of solution.
The use of a magnetic stirrer will assist the dissolving process.
* The above is a plain english explanation for the chemically challenged.
Lyn.
Aluminium Sulfate 0.1M
Dissolve 67g of aluminium sulfate in distilled water and make up to 1 litre of solution.
The use of a magnetic stirrer will assist the dissolving process.
* The above is a plain english explanation for the chemically challenged.
Lyn.
-
- Posts: 1795
- Joined: 20 Mar 2007, 10:00
- Job Title: Lab Assistant
- Suburb: Tamworth
- State/Location: NSW
aluminium sulfate
Hey guys,
Thanks for your answers. I guess I didn't say it very clearly. It was more getting it to dissolve rather than the mathematical side... Sorry! I am glad someone else has had trouble with this. I wonder what the bottle of 1M aluminium sulfate really contains? I just started out trying to make 100ml to see if it would dissolve given the need to use so much for a 1M solution. I'll just make it up to a 0.1M solution and hope I never need the other!
Rosalie
Thanks for your answers. I guess I didn't say it very clearly. It was more getting it to dissolve rather than the mathematical side... Sorry! I am glad someone else has had trouble with this. I wonder what the bottle of 1M aluminium sulfate really contains? I just started out trying to make 100ml to see if it would dissolve given the need to use so much for a 1M solution. I'll just make it up to a 0.1M solution and hope I never need the other!
Rosalie