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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

Complete Ionic Equations

General Chemistry

6. Chemical Quantities & Aqueous Reactions

Complete Ionic Equations

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Multiple Choice

Which of the following is the balanced complete ionic equation for the reaction K2SO4(aq) + CaI2(aq) → CaSO4(s) + KI(aq)?

2K+(aq) + SO4^2-(aq) + Ca^2+(aq) + 2I-(aq) → Ca^2+(aq) + SO4^2-(aq) + 2K+(aq) + 2I-(aq)

2K+(aq) + SO4^2-(aq) + Ca^2+(aq) + 2I-(aq) → CaSO4(s) + 2K+(aq) + 2I-(aq)

K2SO4(aq) + CaI2(aq) → Ca^2+(aq) + SO4^2-(aq) + 2K+(aq) + 2I-(aq)

K2SO4(aq) + CaI2(aq) → CaSO4(s) + 2KI(aq)

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Verified step by step guidance

Identify the reactants and products in the given chemical equation: K2SO4(aq) + CaI2(aq) → CaSO4(s) + KI(aq).

Write the dissociation of the aqueous compounds into their respective ions: K2SO4(aq) dissociates into 2K+(aq) and SO4^2-(aq); CaI2(aq) dissociates into Ca^2+(aq) and 2I-(aq).

Write the complete ionic equation by including all the ions from the dissociated reactants: 2K+(aq) + SO4^2-(aq) + Ca^2+(aq) + 2I-(aq) → CaSO4(s) + 2K+(aq) + 2I-(aq).

Identify the spectator ions, which are ions that appear unchanged on both sides of the equation. In this case, 2K+(aq) and 2I-(aq) are spectator ions.

Write the net ionic equation by removing the spectator ions, leaving only the ions that participate in forming the precipitate: Ca^2+(aq) + SO4^2-(aq) → CaSO4(s).