Chemistry 10 Dr. Scholefield Chapter 7 Worksheet – Part B Homework is not collected or graded, but should be worked on seriously every week. Combination and Decomposition Reactions 1. Write the generic equation for a combination reaction. Which (if any) of the reactions on Worksheet 7A could be classified as combination reactions? 2. Write the generic equation for a decomposition reaction. Which (if any) of the reactions on Worksheet 7A could be classified as decomposition reactions? Combustion Reactions 3. Write the generic equation for a combustion reaction involving a hydrocarbon reactant. Which (if any) of the reactions on Worksheet 7A could be classified as combustions of hydrocarbons? 4. Write the balanced equations for the combustion reactions of the following hydrocarbons: a. liquid propanol ( in rubbing alcohol, C3H8O). b. liquid butane (in cigarette lighters, C4H10). The Solubility of Ionic Compounds 5. In the presence of water, what will be the state of: a soluble ionic compound? an insoluble ionic compound? 6. Use your solubility rules to determine which of the following ionic compounds are soluble in water and which are insoluble in water. Rb3PO4 Fe(OH)3 AgI CuSO4 MgCrO4 Sn(C2H3O2)2 NH4ClO3 ZnSSingle Displacement Reactions 7. Write the generic equations for single displacement reactions involving (a) a metal, and (b) a non-metal. Which (if any) of the reactions on Worksheet 7A could be classified as single displacement reactions? 8. For each of the following sets of reactants: • determine whether or not a single displacement reaction would occur, • if a reaction does occur, predict the names and states of the products, then write the balanced molecular equation for the reaction. a. Aluminum metal + aqueous lead(II) nitrate Does a reaction occur? Product Names and States: Molecular Equation: b. Nickel metal + hydrobromic acid Does a reaction occur? Product Names and States: Molecular Equation: c. Tin metal + aqueous calcium acetate Does a reaction occur? Product Names and States: Molecular Equation: d. Zinc metal + phosphoric acid Does a reaction occur? Product Names and States: Molecular Equation: e. Copper metal + aqueous gold(III) sulfate Does a reaction occur? Product Names and States: Molecular Equation: f. Lithium metal + water Does a reaction occur? Product Names and States: Molecular Equation: 9. What are two likely observations you would make if you saw a single displacement reaction occur in the lab?Double Displacement Reactions 10. Write the generic equation for a double displacement reaction. Which (if any) of the reactions on Worksheet 7A could be classified as double displacement reactions? 11. Determine whether a precipitation reaction would occur for the following sets of reactants. If yes: • predict the names and states of the products, • write the balanced molecular equation for the reaction, • circle the precipitate in the balanced equation, and • write the complete ionic and net ionic equations for the reaction. a. Aqueous ammonium sulfide + aqueous copper(II) nitrate Does a reaction occur? Product Names and States: Molecular Equation: Complete Ionic Equation: Net Ionic Equation: b. Aqueous iron(III) chloride + aqueous sodium carbonate Does a reaction occur? Product Names and States: Molecular Equation: Complete Ionic Equation: Net Ionic Equation: c. Aqueous zinc iodide + aqueous lithium sulfate Does a reaction occur? Product Names and States: Molecular Equation: Complete Ionic Equation: Net Ionic Equation: d. Aqueous potassium chromate + aqueous lead(II) nitrate Does a reaction occur? Product Names and States: Molecular Equation: Complete Ionic Equation: Net Ionic Equation:e. Aqueous barium nitrate + sulfuric acid Does a reaction occur? Product Names and States: Molecular Equation: Complete Ionic Equation: Net Ionic Equation: f. Aqueous cobalt(III) bromide + aqueous silver acetate Does a reaction occur? Product Names and States: Molecular Equation: Complete Ionic Equation: Net Ionic Equation: 12. Write balanced molecular equations for the following neutralization reactions: a. Aqueous barium hydroxide + acetic acid b. Phosphoric acid + aqueous sodium hydroxide c. Aqueous lithium hydroxide + nitric acid 13. Write balanced molecular equations for the following gas-forming reactions: a. Hydrochloric acid + solid calcium sulfite b. Aqueous potassium carbonate + oxalic acid c. Aqueous sodium hydroxide + aqueous ammonium nitrate 14. In lab, what observations would you make if: -- a precipitation reaction occurred? -- a neutralization reaction occurred? -- a gas-forming reaction