5_solution Fa10

5_solution Fa10 - EXPERIMENT 13 Five Solution Analysis...

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Chemistry 142 Grossmont College 13–93 EXPERIMENT 13 Five Solution Analysis Introduction You will be provided with five test tubes, each containing a solution of an unknown compound. Each tube will be coded, and you are to identify each substance. Each of the five tubes will contain one of the following: 1. An acid, either HCl, HNO 3 , or H 2 SO 4 2. A base, either NaOH, NH 3 , or Na 2 S 3. A chloride salt, either NaCl, BaCl 2 , or CuCl 2 4. A nitrate salt, either AgNO 3 , Cu(NO 3 ) 2 , or Fe(NO 3 ) 3 5. A sodium salt, either NaI, Na 2 SO 4 , or Na 2 CO 3 Identify each unknown by the unknown number. In your report includes a description of all steps you do for each sample, the observed results, and your conclusions. Write balanced net ionic equations for all observed reactions for each unknown solution. YOU HAVE ONLY ONE LAB PERIOD TO COMPLETE THIS EXPERIMENT. You should plan before coming to lab how you will analyze your unknown solutions. Consider the following along with any other information that you deem important. 1. acid-base nature of each solution 2. color of each solution 3. potential insoluble salts each solution will form, reagent needed to produce the given salt, and color it would be 4. odor of each solution You may use any reagents present in the laboratories.
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Five Solution Analysis 13–94 Chemistry 142 Grossmont College CAREFUL PREPLANNING CAN GREATLY SIMPLIFY THE WORK NEEDED TO COMPLETE THIS EXPERI- MENT. Outline your analysis procedure on the first page of the lab sheet before coming to class . You will not be allowed to disrupt the work of another student to try to compensate for lack of prepara- tion on your part: Observations and Tests to Consider Odor. Many solutions have characteristic odors, e.g., HCl, NH 3 , and Na 2 S. If you are not familiar
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This note was uploaded on 09/04/2011 for the course CHEM 1B taught by Professor Fossum during the Spring '10 term at Laney College.

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5_solution Fa10 - EXPERIMENT 13 Five Solution Analysis...

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