Table of contents

1. Intro to General Chemistry3h 48m
2. Atoms & Elements4h 16m
3. Chemical Reactions4h 10m
4. BONUS: Lab Techniques and Procedures1h 38m
5. BONUS: Mathematical Operations and Functions48m
6. Chemical Quantities & Aqueous Reactions3h 53m
7. Gases3h 49m
8. Thermochemistry2h 37m
9. Quantum Mechanics2h 58m
10. Periodic Properties of the Elements3h 9m
11. Bonding & Molecular Structure3h 29m
12. Molecular Shapes & Valence Bond Theory1h 57m
13. Liquids, Solids & Intermolecular Forces2h 23m
14. Solutions3h 1m
15. Chemical Kinetics2h 53m
16. Chemical Equilibrium2h 29m
17. Acid and Base Equilibrium5h 1m
18. Aqueous Equilibrium4h 47m
19. Chemical Thermodynamics1h 50m
20. Electrochemistry2h 42m
21. Nuclear Chemistry2h 36m
22. Organic Chemistry5h 7m
23. Chemistry of the Nonmetals2h 39m
24. Transition Metals and Coordination Compounds3h 16m

6. Chemical Quantities & Aqueous Reactions

Solubility Rules

General Chemistry

6. Chemical Quantities & Aqueous Reactions

Solubility Rules

Previous problemNext problem

Struggling with General Chemistry?

Join thousands of students who trust us to help them ace their exams!Watch the first video

Multiple Choice

Which of the following pairs of aqueous solutions will form a precipitate when mixed?

Na2SO4(aq) and BaCl2(aq)

KNO3(aq) and NaCl(aq)

NH4Cl(aq) and Na2SO4(aq)

Li2CO3(aq) and NaNO3(aq)

Previous problemNext problem

Verified step by step guidance

Identify the ions present in each solution pair by writing the dissociation equations. For example, Na2SO4 dissociates into 2 Na\^{+} and SO4\^{2-}, and BaCl2 dissociates into Ba\^{2+} and 2 Cl\^{-}.

Combine the ions from both solutions in each pair to determine all possible cation-anion combinations that could form new compounds upon mixing.

Use the solubility rules to check the solubility of each possible compound formed. Recall that most sulfates (SO4\^{2-}) are soluble except those of Ba\^{2+}, Pb\^{2+}, and Sr\^{2+}, which are insoluble and form precipitates.

For each pair, identify if any of the new compounds formed are insoluble in water, which would indicate the formation of a precipitate.

Conclude that the pair Na2SO4(aq) and BaCl2(aq) will form a precipitate because BaSO4 is insoluble, while the other pairs do not form insoluble compounds and thus no precipitate.