name
class
date
classify each of the following as soluble (aq) or insoluble (s)
1. nh₄ch₂coo
2. ba(oh)₂
3. iron (ii) carbonate
4. naoh
5. rbno₃
6. cesium sulfate
7. mgso₄
8. zncl₂
9. zinc hydroxide
10. zn₃(po₄)₂
11. agbr
12. kno₃
13. al₂s₃
14. silver acetate
15. sr₂cro₄
16. aluminum phosphate
17. baso₄
18. ca(oh)₂
19. baco₃
20. mgcro₄
21. iron (iii) sulfide
22. nh₄cn
23. silver iodide
24. hg₂so₄

Question

Accepted Answer

To solve this, we use solubility rules for ionic compounds:

### 1. $\boldsymbol{NH_4CH_3COO}$
Ammonium ($	ext{NH}_4^+$) and acetate ($	ext{CH}_3	ext{COO}^-$) salts are soluble.
**Answer:** aq

### 2. $\boldsymbol{Ba(OH)_2}$
Hydroxides: $	ext{Ba}^{2+}$ hydroxides are soluble (exception to most hydroxides being insoluble).
**Answer:** aq

### 3. Iron (II) Carbonate ($\boldsymbol{FeCO_3}$)
Carbonates ($	ext{CO}_3^{2-}$) are insoluble, except for Group 1 and $	ext{NH}_4^+$. $	ext{Fe}^{2+}$ is not Group 1 or $	ext{NH}_4^+$.
**Answer:** s

### 4. $\boldsymbol{NaOH}$
Hydroxides: $	ext{Na}^+$ (Group 1) hydroxides are soluble.
**Answer:** aq

### 5. $\boldsymbol{RbNO_3}$
Nitrates ($	ext{NO}_3^-$) are soluble (all nitrates are soluble). $	ext{Rb}^+$ is Group 1.
**Answer:** aq

### 6. Cesium Sulfate ($\boldsymbol{Cs_2SO_4}$)
Sulfates ($	ext{SO}_4^{2-}$) are soluble, except for $	ext{Ba}^{2+}, 	ext{Pb}^{2+}, 	ext{Ca}^{2+}, 	ext{Sr}^{2+}$. $	ext{Cs}^+$ is Group 1.
**Answer:** aq

### 7. $\boldsymbol{MgSO_4}$
Sulfates: $	ext{Mg}^{2+}$ sulfates are soluble (not in the sulfate insoluble exceptions).
**Answer:** aq

### 8. $\boldsymbol{ZnCl_2}$
Chlorides ($	ext{Cl}^-$) are soluble, except for $	ext{Ag}^+, 	ext{Pb}^{2+}, 	ext{Hg}_2^{2+}$. $	ext{Zn}^{2+}$ is not an exception.
**Answer:** aq

### 9. Zinc Hydroxide ($\boldsymbol{Zn(OH)_2}$)
Hydroxides: $	ext{Zn}^{2+}$ hydroxides are insoluble (most hydroxides are insoluble, except Group 1, $	ext{NH}_4^+$, $	ext{Ba}^{2+}$, etc.).
**Answer:** s

### 10. $\boldsymbol{Zn_3(PO_4)_2}$
Phosphates ($	ext{PO}_4^{3-}$) are insoluble, except for Group 1 and $	ext{NH}_4^+$. $	ext{Zn}^{2+}$ is not Group 1 or $	ext{NH}_4^+$.
**Answer:** s

### 11. $\boldsymbol{AgBr}$
Bromides ($	ext{Br}^-$) are insoluble for $	ext{Ag}^+$ (halide exception: $	ext{Ag}^+, 	ext{Pb}^{2+}, 	ext{Hg}_2^{2+}$).
**Answer:** s

### 12. $\boldsymbol{KNO_3}$
Nitrates: All nitrates are soluble. $	ext{K}^+$ is Group 1.
**Answer:** aq

### 13. $\boldsymbol{Al_2S_3}$
Sulfides ($	ext{S}^{2-}$) are insoluble, except for Group 1, $	ext{NH}_4^+$, and alkaline earths (but $	ext{Al}^{3+}$ is not in these groups).
**Answer:** s

### 14. Silver Acetate ($\boldsymbol{AgCH_3COO}$)
Acetates: $	ext{Ag}^+$ acetate is sparingly soluble (insoluble, as $	ext{Ag}^+$ salts of weak acids are often insoluble; acetate solubility exception is rare, and $	ext{Ag}^+$ acetate is insoluble).
**Answer:** s

### 15. $\boldsymbol{Sr_2CrO_4}$ (Note: Formula should be $\boldsymbol{SrCrO_4}$)
Chromates ($	ext{CrO}_4^{2-}$): $	ext{Sr}^{2+}$ chromate is insoluble (chromates are insoluble for $	ext{Sr}^{2+}$, $	ext{Ba}^{2+}$, etc.).
**Answer:** s

### 16. Aluminum Phosphate ($\boldsymbol{AlPO_4}$)
Phosphates: $	ext{Al}^{3+}$ phosphate is insoluble (phosphates are insoluble except Group 1 and $	ext{NH}_4^+$).
**Answer:** s

### 17. $\boldsymbol{BaSO_4}$
Sulfates: $	ext{Ba}^{2+}$ sulfate is insoluble (classic sulfate exception).
**Answer:** s

### 18. $\boldsymbol{Ca(OH)_2}$
Hydroxides: $	ext{Ca}^{2+}$ hydroxide is slightly soluble (considered insoluble for most purposes, or sparingly soluble; follow solubility rules: hydroxides of $	ext{Ca}^{2+}, 	ext{Sr}^{2+}, 	ext{Ba}^{2+}$ are slightly soluble, often classified as insoluble or "slightly soluble"—here, classify as s or aq? Wait, $	ext{Ca(OH)}_2$ is sparingly soluble, but in many solubility charts, it’s considered insoluble (or "slightly soluble" but treated as s).
**Answer:** s (or aq if considering slight solubility, but standard is s)

### 19. $\boldsymbol{BaCO_3}$
Carbonates: $	ext{Ba}^{2+}$ carbonate is insoluble (carbonates are insoluble except Group 1 and $	ext{NH}_4^+$).
**Answer:** s

### 20. $\boldsymbol{MgCrO_4}$
Chromates: $	ext{Mg}^{2+}$ chromate is soluble (chromates are soluble for Group 1 and $	ext{Mg}^{2+}$? Wait, chromates: $	ext{MgCrO}_4$ is soluble (unlike $	ext{BaCrO}_4$).
**Answer:** aq

### 21. Iron (III) Sulfide ($\boldsymbol{Fe_2S_3}$)
Sulfides: $	ext{Fe}^{3+}$ sulfide is insoluble (sulfides are insoluble except Group 1, $	ext{NH}_4^+$, and alkaline earths).
**Answer:** s

### 22. $\boldsymbol{NH_4CN}$
Cyanides ($	ext{CN}^-$): $	ext{NH}_4^+$ cyanide is soluble (ammonium salts are soluble).
**Answer:** aq

### 23. Silver Iodide ($\boldsymbol{AgI}$)
Iodides ($	ext{I}^-$): $	ext{Ag}^+$ iodide is insoluble (halide exception: $	ext{Ag}^+, 	ext{Pb}^{2+}, 	ext{Hg}_2^{2+}$).
**Answer:** s

### 24. $\boldsymbol{Hg_2SO_4}$
Sulfates: $	ext{Hg}_2^{2+}$ sulfate is insoluble (sulfate exception: $	ext{Hg}_2^{2+}$).
**Answer:** s

### Final Table (Answers):
| Compound               | Solubility |
|------------------------|------------|
| 1. $	ext{NH}_4	ext{CH}_3	ext{COO}$ | aq         |
| 2. $	ext{Ba(OH)}_2$    | aq         |
| 3. Iron (II) Carbonate  | s          |
| 4. $	ext{NaOH}$        | aq         |
| 5. $	ext{RbNO}_3$      | aq         |
| 6. Cesium Sulfate       | aq         |
| 7. $	ext{MgSO}_4$      | aq         |
| 8. $	ext{ZnCl}_2$      | aq         |
| 9. Zinc Hydroxide       | s          |
| 10. $	ext{Zn}_3(	ext{PO}_4)_2$ | s          |
| 11. $	ext{AgBr}$       | s          |
| 12. $	ext{KNO}_3$      | aq         |
| 13. $	ext{Al}_2	ext{S}_3$ | s          |
| 14. Silver Acetate      | s          |
| 15. $	ext{SrCrO}_4$    | s          |
| 16. Aluminum Phosphate  | s          |
| 17. $	ext{BaSO}_4$     | s          |
| 18. $	ext{Ca(OH)}_2$   | s          |
| 19. $	ext{BaCO}_3$     | s          |
| 20. $	ext{MgCrO}_4$    | aq         |
| 21. Iron (III) Sulfide  | s          |
| 22. $	ext{NH}_4	ext{CN}$ | aq         |
| 23. Silver Iodide       | s          |
| 24. $	ext{Hg}_2	ext{SO}_4$ | s          |

Sovi.AI - AI Math Tutor

QUESTION IMAGE

Question

Explanation:

1. $\boldsymbol{NH_4CH_3COO}$

Answer:

2. $\boldsymbol{Ba(OH)_2}$