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1. Matter and Measurements4h 31m
2. Atoms and the Periodic Table5h 23m
3. Ionic Compounds2h 18m
4. Molecular Compounds2h 18m
5. Classification & Balancing of Chemical Reactions3h 17m
6. Chemical Reactions & Quantities2h 27m
7. Energy, Rate and Equilibrium3h 46m
8. Gases, Liquids and Solids3h 25m
9. Solutions4h 10m
10. Acids and Bases3h 29m
11. Nuclear Chemistry56m
BONUS: Lab Techniques and Procedures1h 38m
BONUS: Mathematical Operations and Functions47m
12. Introduction to Organic Chemistry1h 34m
13. Alkenes, Alkynes, and Aromatic Compounds2h 12m
14. Compounds with Oxygen or Sulfur1h 6m
15. Aldehydes and Ketones1h 1m
16. Carboxylic Acids and Their Derivatives1h 11m
17. Amines39m
18. Amino Acids and Proteins1h 51m
19. Enzymes1h 37m
20. Carbohydrates1h 41m
21. The Generation of Biochemical Energy2h 8m
22. Carbohydrate Metabolism2h 22m
23. Lipids2h 26m
24. Lipid Metabolism1h 45m
25. Protein and Amino Acid Metabolism1h 37m
26. Nucleic Acids and Protein Synthesis2h 54m

5. Classification & Balancing of Chemical Reactions

Complete Ionic Equations

GOB Chemistry

5. Classification & Balancing of Chemical Reactions

Complete Ionic Equations

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Multiple Choice

Which of the following reagents could be used to separate the two anions from a solution containing magnesium nitrate and cesium hydroxide?

NH₄CN

NaCl

KNO₃

ZnBr₂

CsBrO₃

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Verified step by step guidance

Identify the anions present in the solution. Magnesium nitrate (Mg(NO3)2) contains nitrate ions (NO3^-), and cesium hydroxide (CsOH) contains hydroxide ions (OH^-).

Consider the solubility rules for common ionic compounds. Nitrate ions (NO3^-) are generally soluble with most cations, while hydroxide ions (OH^-) can form precipitates with certain metal cations.

Examine the potential reagents: NH4CN, NaCl, KNO3, ZnBr2, and CsBrO3. Determine which reagent can form an insoluble compound with one of the anions, thereby separating them.

Focus on ZnBr2 as a reagent. Zinc ions (Zn^2+) can react with hydroxide ions (OH^-) to form zinc hydroxide (Zn(OH)2), which is insoluble in water and will precipitate out of the solution.

Conclude that adding ZnBr2 to the solution will cause the hydroxide ions to precipitate as zinc hydroxide, effectively separating them from the nitrate ions, which remain in solution.