Lab 4 - Solubility Rules

It is often convenient to write a reaction with a ne

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Unformatted text preview: ectly involved in the chemical reaction and are called s pe ctator ions . It is often convenient to write a reaction with a ne t ionic e quation, which shows only those species that participate in the chemical reaction. The net ionic equation for the reaction shown in equation 14 is shown below. ( 15 ) Pb2+(aq) + 2 I−(aq) → PbI2(s) Net ionic equations are much simpler to write and interpret than total ionic equations. They are used frequently in inorganic chemistry. The spectator ions must, of course, be present. One does not find a bottle of lead(II) cations or iodide ions on a lab shelf! However, the reaction will work nicely regardless of whether the lead ion is introduced as lead nitrate, Pb(NO3)2, or as lead acetate, Pb(C2H3O2)2. Similarly, the iodide compound can be potassium iodide, KI, or sodium iodide, NaI. All of these compounds are soluble in water, and stable. In this laboratory, you will perform a number of microscale chemical reactions to determine which anions form insoluble compounds with various cations. The results will be used to formulate a table of solubility rules. Since the reactions will be done with io...
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This document was uploaded on 01/22/2014.

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