Ionic Reactions Lab

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Lab Report Name: _____

Date: ______

Ionic Reactions

List all of the cations used:
Cobalt, Copper, Iron, Barium, Nickel

List all of the anions used:
Phosphate, Iodide, Sulfate, Chloride, Bicarbonate, Carbonate, Hydroxide

Compare your results with the solubility rules and/or solubility table in your chemistry text.
QUESTIONS:

A - Do your results agree with your expectations from the solubility rules/table?
Yes, I feel my results agreed with the expectations laid out in the rules and table from the lab.

B - Which anions generally form precipitates? What are exceptions? Precipitates: Most metal hydroxides and oxides.
Exceptions: Alkali metals, hydroxides and barium

C - Which anions generally do not form precipitates? What are the exceptions? See solubility table/rules

Salts of nitrate and salts of sulfate.

D - Which cations generally do not form precipitates?

Cautions from row 1-2 had very few insoluble salts. They do not form precipitates.

F - Select 5 reactions that produce a precipitate, color change, or gas and write balanced chemical equation below. Remember, a reaction may be indicated by the formation of a precipitate, color change, or the formation of gas. Record the well numbers of the precipitates you chose for your equations.

1A Co(NO3)2*6H2O when mixed with Na3PO4*12H2O the chemical combination turned Purple.
1B Cu (NO3)2 *3H2O when mixed with Na3PO4*12H2O the chemical combination turned light blue
1C Fe (NO3)3 * 9H2O when mixed with Na3PO4*12H2O the chemical combination turned a light yellow
1D Ba (NO3)2 when mixed with Na3PO4*12H2O the chemical combination turned white and the mixture sizzled when mixed.
1E Ni (NO3)2 * 6H2O when mixed with Na3PO4*12H2O the chemical combination turned a light foam green.
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