Show that PbS(s) will precipitate but FeS(s) will not precipitate from a solution that is 0 010 M in Pb 2 , 0 010 M in Fe 2 , saturated in H 2 S (0 10 M H 2 S), and maintained with H 3 O 0 30 M For PbS, K spa 3 x 10 7 for FeS, K spa 6 x 10 2 ...

Analyze We must determine whether for the stated conditions equilibrium is ...

Show that PbS(s) will precipitate but FeS(s) will not precipitate from a solution that is 0.010 M

Question:

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, K_spa = 3 x 10^-7; for FeS, K_spa = 6 x 10².