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Write the balanced molecular and ionic chemical equations for the three reactions (two precipitation reactions and the dissolution of PbI2 in excess of KI). What is happening with the solubility of PbI2 if excess of I- is added?

Write the balanced molecular and ionic chemical equations for the three reactions (two precipitation reactions and the dissolution of PbI2 in excess of KI). What is happening with the solubility of PbI2 if excess of I- is added?

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
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Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Write the balanced molecular and ionic chemical equations for the three reactions (two precipitation reactions and the dissolution of PbI2 in excess of KI). What is happening with the solubility of PbI2 if excess of I- is added?
38 O Test 7. Solubilites of lead(II) salts Further difference between lead and other elements in the Group 14, demon- strated in this test, is the very low solubility of Pb2+ salts in comparison to Sn²+ and Ge²+. You need a solid knowledge of the L'Châtelier's principle to follow the material and some points covered in Section 2.4. Experiment 3.The Chemistry of Groups 13 and 14-Experimental Section Take three clean and dry test tubes. In two test tubes place a spatula-tip of lead nitrate and in the third one two spatula tips of KI. Add about 0.5 mL of dis- tilled water in all three test tubes to dissolve the solids. To the first Pb(NO3)2 test tube add a few drops of dilute HCl. Gently heat the test tube in a water bath until the solid dissolves. Take the tube out of water bath and let it cool down. To the second Pb(NO3)2 test tube slowly add the solution of KI from the third test tube. Observe the formation and disappearance of the precipitate. CAUTION: All lead compounds are very toxic! Properly dispose of the waste from this test!
Transcribed Image Text:38 O Test 7. Solubilites of lead(II) salts Further difference between lead and other elements in the Group 14, demon- strated in this test, is the very low solubility of Pb2+ salts in comparison to Sn²+ and Ge²+. You need a solid knowledge of the L'Châtelier's principle to follow the material and some points covered in Section 2.4. Experiment 3.The Chemistry of Groups 13 and 14-Experimental Section Take three clean and dry test tubes. In two test tubes place a spatula-tip of lead nitrate and in the third one two spatula tips of KI. Add about 0.5 mL of dis- tilled water in all three test tubes to dissolve the solids. To the first Pb(NO3)2 test tube add a few drops of dilute HCl. Gently heat the test tube in a water bath until the solid dissolves. Take the tube out of water bath and let it cool down. To the second Pb(NO3)2 test tube slowly add the solution of KI from the third test tube. Observe the formation and disappearance of the precipitate. CAUTION: All lead compounds are very toxic! Properly dispose of the waste from this test!
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