Honors Chemistry Predicting Products of Chemical Reactions

1. Honors ChemistryPredicting Products of Chemical Reactions Chapter 4

2. Predicting Products • Predict products based on pattern and oxidation numbers (charges) in a skeleton equation • Balance skeleton equation

3. Single Displacement • Hints: always pair positive and negative ions • Examples: Silver and Hydrochloric Acid • Bromine and Magnesium fluoride

4. Synthesis • Hints: always write + ion first • - ion last • Patterns • 1) two or more elements combine • Fe and S forms Iron (II) sulfide • 2) nonmetallic oxide and water forms acid Sulfur dioxide and water forms sulfurous acid

5. Synthesis cont. • 3) Metallic oxide and water forms a hydroxide • Sodium oxide and water forms sodium hydroxide • 4) nonmetallic oxide and metallic oxide forms a salt • Carbon dioxide and sodium oxide forms sodium carbonate

6. Double Displacement • Hint : when switching partners always place + and _ ions together • Never two + • Never two – • Example – • Vanadium (V) carbonate and silver phosphate forms Vanadium (V) phosphate and silver carbonate

7. Combustion • Always hydrocarbon and oxygen forming carbon dioxide and water

8. Decomposition • Patterns • 1) acids form water and element oxide • Example: • 2) metallic hydroxides form metallic oxide and water • Example:

9. Decomposition cont. • 3) metallic carbonates form metallic oxide and carbon dioxide • Example: • 4) metallic chlorates form metallic chlorides and oxygen • Example: • 5) Binary compounds form separate elements