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Using the Solubility Rules, write the balanced molecular, total ionic, and net ionic equations (including physical...

Using the Solubility Rules, write the balanced molecular, total ionic, and net ionic equations (including physical states) for the following:

Hints: There is no such thing as Na2+ or Na3+. Na is in group 1A, so you know it can only form a +1 charge. (For example, it will form 3 Na+ ions for each Na3PO4.) There is a diatomic molecule Cl2. But when ionic compounds are dissolved in water, they form ions so the dissociation of MgCl2 is to an Mg2+ and 2 Cl- ions, as an example.

  1. Na2S (aq) + CuCl (aq) →


  2. CoCl2 (aq) + KOH (aq) →

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Answer #1

Na2S(aq) +2 CuCl(aq) ---> Cu2S(s) +2 NaCl(aq)

ionic reaction is

2Cu+ (aq)+ S-2 (aq) ------> Cu2S(s)

CoCl2(aq) + 2 KOH (aq) ------> Co(OH)2 (s) +2 KCl(aq)

net ionic change is

Co+2(aq) + 2OH-(aq) ------> Co(OH)2 (s)

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