Question #229c4

1 Answer
Aug 17, 2017

Answer:

The most common ones are #"AgNO"_3, "Hg"_2("NO"_3)_2#, and #"Pb"("NO"_3)_2#.

Explanation:

Two important solubility rules are:

  1. Salts containing #"NO"_3^"-"# are generally soluble.

  2. Salts containing #"Cl"^"-"# are generally soluble except for the chlorides of #"Ag"^"+", "Pb"^"2+"#, and #"Hg"_2^"2+"#.

Thus, #"AgCl", "PbCl"_2#, and #"Hg"_2"Cl"_2# are insoluble.

The corresponding equations are:

#"2AgNO"_3"(aq)" + "FeCl"_2"(aq)" → "2AgCl(s)" + "Fe"("NO"_3)_2("aq")#

#"Hg"_2("NO"_3)_2"(aq)" + "FeCl"_2"(aq)" → "Hg"_2"Cl"_2"(s)" + "Fe"("NO"_3)_2("aq")#

#"Pb"("NO"_3)_2"(aq)" + "FeCl"_2"(aq)" → "PbCl"_2"(s)" + "Fe"("NO"_3)_2("aq")#