Qualitative analysis of ionic compounds

 

prelab assignment  [20 points]

1.  copy the below table.  if a precipitate forms by mixing the salts in the corresponding column and row, then place a "ppt" in the below table.

 
sodium hydroxide
sodium phosphate
sodium carbonate

sodium   iodide

sodium sulfate
silver nitrate
         
lead II nitrate
         
cobalt nitrate
         
copper II nitrate
         
barium nitrate
         
iron II nitrate
         
magnesium nitrate
         

2.  msds information on sodium hydroxide and silver nitrate (use msds form)

 

purpose

 to observe various precipitation reactions

compare experimental observations to predictions based upon solubility rules

evaluate the reliability of the solubility rules

materials

aqueous solutions of various ionic compounds

microplate wells  [to view reaction]

methods

mix 3 drops of various combination of chemicals (i.e. nitrate salts & sodium salts)

if a precipitate does not form within a second or so upon adding the 2nd solution, consider it to be not forming a precipitate. 

 

content of your lab report  [25 points]

results & discussion  [10 points]

questions  [15 points]

resource

lab activity source (examples):  site 1  & site 2 [access 4 / 2009]