Solubility Rules Worksheet with completed answers, illustrating compound solubility and reaction equations.

Problem Overview:

The task involves using solubility rules to determine whether the compounds in the given reactions are soluble (aq) or insoluble (s). The solubility rules typically include guidelines such as:
- Most nitrate (NO₃⁻), acetate (CH₃COO⁻), and ammonium (NH₄⁺) salts are soluble.
- Most chlorides (Cl⁻), bromides (Br⁻), and iodides (I⁻) are soluble, except those of Ag⁺, Pb²⁺, and Hg₂²⁺.
- Most sulfates (SO₄²⁻) are soluble, except those of Ba²⁺, Sr²⁺, Ca²⁺, Pb²⁺, and Hg₂²⁺.
- Most hydroxides (OH⁻) are insoluble, except those of Group 1 metals (Li⁺, Na⁺, K⁺, etc.) and Ca²⁺, Sr²⁺, and Ba²⁺.
- Most carbonates (CO₃²⁻), phosphates (PO₄³⁻), and sulfides (S²⁻) are insoluble.

Step-by-Step Solution:

#### Part 1: Predicting Solubility of Compounds
We will use the solubility rules to label each compound as soluble (aq) or insoluble (s).

1. Cu(NO₃)₂: Soluble (nitrates are generally soluble).
- Answer: aq

2. NaOH: Soluble (hydroxides of Group 1 metals are soluble).
- Answer: aq

3. Na₂CrO₄: Soluble (chromates are generally soluble).
- Answer: aq

4. KCN: Soluble (cyanides are generally soluble).
- Answer: aq

5. MgCO₃: Insoluble (carbonates are generally insoluble).
- Answer: s

6. Mg(OH)₂: Insoluble (hydroxides of Mg²⁺ are insoluble).
- Answer: s

7. MgCrO₄: Soluble (chromates are generally soluble).
- Answer: aq

8. CuSO₄: Soluble (sulfates are generally soluble).
- Answer: aq

9. NH₄Cl: Soluble (ammonium salts are generally soluble).
- Answer: aq

10. PbCrO₄: Insoluble (lead chromate is an exception and is insoluble).
- Answer: s

11. CuCl₂: Soluble (chlorides are generally soluble).
- Answer: aq

12. Hg₂SO₄: Insoluble (mercury(II) sulfate is insoluble).
- Answer: s

13. NaCl: Soluble (chlorides are generally soluble).
- Answer: aq

14. Ag₂O: Insoluble (silver oxide is insoluble).
- Answer: s

15. Sn(SO₄)₂: Soluble (sulfates are generally soluble).
- Answer: aq

16. Ba(C₂H₃O₂)₂: Soluble (acetates are generally soluble).
- Answer: aq

---

#### Part 2: Labeling Reactions
Using the solubility rules, we will determine whether the products in each reaction are soluble (aq) or insoluble (s).

1. Reaction 1:
\[
\text{Na}_2\text{SO}_4 + \text{BaCl}_2 \rightarrow 2\text{NaCl} + \text{BaSO}_4
\]
- NaCl: Soluble (chlorides are generally soluble).
- Label: aq
- BaSO₄: Insoluble (barium sulfate is insoluble).
- Label: s

2. Reaction 2:
\[
\text{HCl} + \text{Ba(ClO}_3)_2 \rightarrow \text{HClO}_3 + \text{BaCl}_2
\]
- HClO₃: Soluble (chlorates are generally soluble).
- Label: aq
- BaCl₂: Soluble (chlorides are generally soluble).
- Label: aq

3. Reaction 3:
\[
2\text{Cr(NO}_3)_3 + 3(\text{NH}_4)_2\text{S} \rightarrow \text{Cr}_2\text{S}_3 + 6\text{NH}_4\text{NO}_3
\]
- Cr₂S₃: Insoluble (sulfides are generally insoluble).
- Label: s
- NH₄NO₃: Soluble (ammonium nitrates are generally soluble).
- Label: aq

4. Reaction 4:
\[
\text{NaOH} + \text{NH}_4\text{Cl} \rightarrow \text{NaCl} + \text{NH}_4\text{OH}
\]
- NaCl: Soluble (chlorides are generally soluble).
- Label: aq
- NH₄OH: Soluble (ammonium hydroxide is soluble).
- Label: aq

5. Reaction 5:
\[
\text{KI} + \text{Pb(C}_2\text{H}_3\text{O}_2)_2 \rightarrow \text{PbI}_2 + \text{KC}_2\text{H}_3\text{O}_2
\]
- PbI₂: Insoluble (lead iodide is insoluble).
- Label: s
- KC₂H₃O₂: Soluble (potassium acetate is soluble).
- Label: aq

6. Reaction 6:
\[
\text{Ag(NO}_3) + \text{NH}_4\text{Cl} \rightarrow \text{NH}_4\text{NO}_3 + \text{AgCl}
\]
- NH₄NO₃: Soluble (ammonium nitrates are generally soluble).
- Label: aq
- AgCl: Insoluble (silver chloride is insoluble).
- Label: s

7. Reaction 7:
\[
2\text{HCl} + \text{K}_2\text{SO}_3 \rightarrow \text{H}_2\text{SO}_3 + 2\text{KCl}
\]
- H₂SO₃: Soluble (sulfurous acid is soluble).
- Label: aq
- KCl: Soluble (chlorides are generally soluble).
- Label: aq

8. Reaction 8:
\[
2\text{RbOH} + \text{Cu(ClO}_3)_2 \rightarrow \text{Cu(OH)}_2 + 2\text{RbClO}_3
\]
- Cu(OH)₂: Insoluble (copper(II) hydroxide is insoluble).
- Label: s
- RbClO₃: Soluble (chlorates are generally soluble).
- Label: aq

9. Reaction 9:
\[
2\text{Fe(CN)}_3 + 3\text{Li}_2\text{CO}_3 \rightarrow \text{Fe}_2(\text{CO}_3)_3 + 6\text{LiCN}
\]
- Fe₂(CO₃)₃: Insoluble (carbonates are generally insoluble).
- Label: s
- LiCN: Soluble (cyanides are generally soluble).
- Label: aq

10. Reaction 10:
\[
2\text{NaI} + \text{Pb(NO}_3)_2 \rightarrow \text{PbI}_2 + 2\text{NaNO}_3
\]
- PbI₂: Insoluble (lead iodide is insoluble).
- Label: s
- NaNO₃: Soluble (nitrates are generally soluble).
- Label: aq

---

Final Answer:

\[
\boxed{
\begin{array}{ll}
\text{1. } & \text{NaCl (aq), BaSO}_4 \text{ (s)} \\
\text{2. } & \text{HClO}_3 \text{ (aq), BaCl}_2 \text{ (aq)} \\
\text{3. } & \text{Cr}_2\text{S}_3 \text{ (s), NH}_4\text{NO}_3 \text{ (aq)} \\
\text{4. } & \text{NaCl (aq), NH}_4\text{OH (aq)} \\
\text{5. } & \text{PbI}_2 \text{ (s), KC}_2\text{H}_3\text{O}_2 \text{ (aq)} \\
\text{6. } & \text{NH}_4\text{NO}_3 \text{ (aq), AgCl (s)} \\
\text{7. } & \text{H}_2\text{SO}_3 \text{ (aq), KCl (aq)} \\
\text{8. } & \text{Cu(OH)}_2 \text{ (s), RbClO}_3 \text{ (aq)} \\
\text{9. } & \text{Fe}_2(\text{CO}_3)_3 \text{ (s), LiCN (aq)} \\
\text{10. } & \text{PbI}_2 \text{ (s), NaNO}_3 \text{ (aq)}
\end{array}
}
\]