Carbonate Precipitates

 

Hazards: 

Nickel salts are particularly toxic.

Copper and cobalt salts are toxic.

Chemicals and Solutions: 

0.1M Cobalt chloride

0.1M Copper sulfate

0.1M Nickel nitrate

0.1M Sodium carbonate

0.1M Sodium hydroxide

 

Materials: 

Hydrometer cylinders

Procedure: 

Mix nickel nitrate solution with sodium carbonate solution to form a green ppt. of nickel carbonate.

Mix copper sulfate solution with sodium carbonate solution to form a blue ppt. of copper carbonate.

Mix cobalt chloride solution with sodium carbonate solution to form a purple ppt. of cobalt carbonate.

Use excess carbonate, to assure that precipitation of the toxic metal ion.

Hint: 

Discussion: 

Carbonate salts are insoluble with the exception of those containing alkali metal ions and ammonium ions.

To schedule a demonstration, please send an email to the demonstration lab.

 

Contact:

Eric Camp

Lecture Demonstration Technician

Bagley Hall 171

(206) 543-1606

ericcamp@uw.edu

 

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