Question

Question #229c4

Answer 1

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")`