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18 of 19 |  |
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E-18
8.
How does the addition of NH3
(aq)
affect the equilibrium position for reaction (8)? Explain.
9.
How does the addition of AgNO3
(aq)
affect the equilibrium position for reaction (8)? Explain.
Part II. Solubility of Lead Salts
1.
Explain why the heights of the precipitates in Parts II A1, II A2, and II A3 were different. Support your
answer with the appropriate balanced net ionic equations.
2.
From your observations, list Pb(NO3)2, PbCl2, PbCrO
4
, and PbS in order of decreasing solubility. Use
experimental evidence (other than the height of the precipitate) and the appropriate interactive
equilibria to explain your answer.
