CHM116 week 6 Mon probs - 3+ and 0.014 M in Mg 2+ . If...

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For a given solution containing an ionic compound, explain the relationship between Q, K sp , and the “saturation” of the solution. Use several complete sentences. 1. Problems for Mon 10/3 Name What are the main groups in the general qualitative analysis scheme described in sec. 16.7? Describe the steps and reagents for separating the groups. 2. Look ahead to the three “Shifty equilibria” labs in your lab manual. Skim these and take special note of the table near the end (I’m guessing page 96?) that shows the solubility equilibria and complex ion equilibria. In the space below, suggest how to separate the individual ions from a solution that contains Ag + , Ca 2+ , and Al 3+ ions. 3.
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Consider a solution that is 0.022 M in Fe
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Unformatted text preview: 3+ and 0.014 M in Mg 2+ . If potassium carbonate, K 2 CO 3 , is used to selectively precipitate one of the cations while leaving the other cation in solution, which cation will precipitate first? What is the minimum concentration of potassium carbonate required to cause precipitation? 4. A 120.0 mL sample of a solution that is 2.8 x 10-3 M in AgNO 3 is mixed with a 225.0 mL sample of a solution that is 0.10 M in NaCN. After the solution reaches equilibrium, what concentration of Ag + ( aq ) remains? 5. Use the appropriate values of K sp and K f to find the equilibrium constant for the following reaction: (show summation of the relevant equilibria too) 6. PbCl 2 ( s ) + 3 OH- ( aq ) Pb(OH) 3- ( aq ) + 2 Cl-( aq )...
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This note was uploaded on 05/15/2011 for the course CHM 116 taught by Professor Matchett during the Fall '11 term at Grand Valley State University.

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CHM116 week 6 Mon probs - 3+ and 0.014 M in Mg 2+ . If...

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