Essay about Ionic Reactions

773 WordsMar 7, 20124 Pages
Ionic Reactions Abstract This experiment is designed to study the nature of ionic reactions, and write net ionic equations for precipitation reactions, as well as to identify spectator ions, perception reactions and solubility of different compounds. Experiment and Observations In this experiment I was using a 96-well plate to add two drops of the following solutions into seven wells in rows A through E: cobalt (II) nitrate, copper (II) nitrate, iron (III) nitrate, barium nitrate, and nickel (II) nitrate. Afterward, two drops of each of sodium phosphate, sodium iodide, sodium sulfate, sodium chloride, sodium bicarbonate, sodium carbonate and sodium hydroxide were added to the five vertical wells under columns…show more content…
This was expected because the solubility rules stated that these were all insoluble substances. I was careful to add exactly two drops of each into each well, as to keep my experimental error to a minimum. Questions: A. Compare your results with the solubility rules and/or solubility table in your chemistry text. B. Do your results agree with your expectations from the solubility rules/table? Yes, my results did agree with my expectations from the basic solubility rules. C. Which anions generally form precipitates? What are exceptions? Most hydroxides, sulfides, carbonates and phosphates form precipitates. Alkali metals, barium, silver nitrate, silver nitrite and silver perchlorate are some exceptions. D. Which anions generally do not form precipitates? What are the exceptions? All nitrate salts, alkali metals, ammonium salts, sulfates, acetates, and halides do not form precipitates. Calcium sulfate, strontium sulfate, barium sulfate, lead (II) ions, silver halide, lead (II) halide and mercury (I) ions are some exceptions. E. Which cations generally do not form precipitates? All cations in groups 1 and 2 of the periodic table generally do not form precipitates. http://chemistry.about.com/od/lectureclassnotes/a/Qualitative-Analysis.htm F. Select 10 reactions that produce a precipitate, color change, or gas and write balanced chemical equation and a net ionic equation for

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