Question #229c4

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Question #229c4

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Answer 1 · 2017-08-17T16:48:52

The most common ones are ${AgNO}_{3}, {Hg}_{2} {({NO}_{3})}_{2}$ $"AgNO"_3, "Hg"_2("NO"_3)_2$ , and $Pb {({NO}_{3})}_{2}$ $"Pb"("NO"_3)_2$ .

Explanation:

Two important solubility rules are:

Salts containing ${NO}_{3}^{-}$ $"NO"_3^"-"$ are generally soluble.
Salts containing ${Cl}^{-}$ $"Cl"^"-"$ are generally soluble except for the chlorides of ${Ag}^{+}, {Pb}^{2+}$ $"Ag"^"+", "Pb"^"2+"$ , and ${Hg}_{2}^{2+}$ $"Hg"_2^"2+"$ .

Thus, $AgCl, {PbCl}_{2}$ $"AgCl", "PbCl"_2$ , and ${Hg}_{2} {Cl}_{2}$ $"Hg"_2"Cl"_2$ are insoluble.

The corresponding equations are:

${2AgNO}_{3} (aq) + {FeCl}_{2} (aq) \to 2AgCl(s) + Fe {({NO}_{3})}_{2} (aq)$ $"2AgNO"_3"(aq)" + "FeCl"_2"(aq)" → "2AgCl(s)" + "Fe"("NO"_3)_2("aq")$

${Hg}_{2} {({NO}_{3})}_{2} (aq) + {FeCl}_{2} (aq) \to {Hg}_{2} {Cl}_{2} (s) + Fe {({NO}_{3})}_{2} (aq)$ $"Hg"_2("NO"_3)_2"(aq)" + "FeCl"_2"(aq)" → "Hg"_2"Cl"_2"(s)" + "Fe"("NO"_3)_2("aq")$

$Pb {({NO}_{3})}_{2} (aq) + {FeCl}_{2} (aq) \to {PbCl}_{2} (s) + Fe {({NO}_{3})}_{2} (aq)$ $"Pb"("NO"_3)_2"(aq)" + "FeCl"_2"(aq)" → "PbCl"_2"(s)" + "Fe"("NO"_3)_2("aq")$

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Question #229c4

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