Solubility Rules Video Lessons

Concept: Solubility

# Problem: Determine whether each of the following compounds is soluble or insoluble. For the soluble compounds, write the ions formed when the salt dissolves in water.a. (NH4)2Sb. CuCO3c. ZnSd. Pb(C2H3O2)2

###### FREE Expert Solution

We are asked to determine whether each of the given compounds is soluble or insolubleFor the soluble compounds, write the ions formed when the salt dissolves in water.

In order to determine if an ionic compound is soluble or not, we can check the solubility rules.

Recall the solubility rules:

Soluble Ionic Compounds:

• Group 1A ions (Li+, Na+, K+, etc.) and Ammonium ion (NH4+) are soluble

• Nitrates (NO3), Acetates (CH3COO or C2H3O2), and most Perchlorates (ClO4) are soluble

• Halides (Cl, Br, and I) are soluble except when paired with Ag+, Pb2+, Cu+, Hg22+

• Sulfates (SO42–) are soluble except those of Ca2+, Sr2+, Ba2+, Ag+, and Pb2+

Insoluble Ionic Compounds:

• Hydroxides (OH) and Sulfides (S2–) are insoluble except when with Group 1A ions (Li+, Na+, K+, etc.), ammonium ion (NH4+), Ca2+, Sr2+, and Ba2+

• Carbonates (CO32–) and Phosphates (PO43–) are insoluble except when with Group 1A ions (Li+, Na+, K+, etc.) and ammonium ion (NH4+)

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###### Problem Details

Determine whether each of the following compounds is soluble or insoluble. For the soluble compounds, write the ions formed when the salt dissolves in water.

a. (NH4)2S

b. CuCO3

c. ZnS

d. Pb(C2H3O2)2