(A) Show that Ag 2 S(s) (K spa = 6 x 10 -30 ) should precipitate and...
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(A) Show that Ag2S(s) (Kspa = 6 x 10-30) should precipitate and that FeS(s) Kspa = 6 x 102) should not precipitate from a solution that is 0.010 M Ag+ and 0.020 M Fe2+, but otherwise under the same conditions as in Example 18-14.
Example 18-14
Show that PbS(s) will precipitate but FeS(s) will not precipitate from a solution that is 0.010 M in Pb2+, 0.010 M in Fe2+, saturated in H2S (0.10 M H2S), and maintained with [H3O+] = 0.30 M. For PbS, Kspa = 3 x 10-7; for FeS, Kspa = 6 x 102.
(B) What is the minimum pH of a solution that is 0.015 M Fe2+ and saturated in H2S (0.10 M) from which FeS(s) (Kspa = 6 x 102) can be precipitated?
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Related Book For
General Chemistry Principles And Modern Applications
ISBN: 9780132931281
11th Edition
Authors: Ralph Petrucci, Jeffry Madura, F. Herring, Carey Bissonnette
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