Ch100: Fundamentals for Chemistry 1 Ch 8: Chemical Equations 1. What factors determine the rate of a chemical reaction? 2. What is the role of a catalyst in a chemical reaction? 3. Sketch a simple energy diagram for an exothermic reaction? 4. Sketch a simple energy diagram for an endothermic reaction? 5. When sodium hydrogen carbonate (sodium bicarbonate) NaHCO3 is heated strongly in a test tube, carbon dioxide gas, CO 2, water vapor, H2O, are evolved from the test tube, leaving a residue of sodium carbonate, Na2CO3. a) The reactant(s) for this reaction are: b) The product(s) for this reaction are: 6. Boric acid, H3BO3, is produced by treating borax (Na2B4O7) with aqueous sulfuric acid and water. Sodium sulfate is a by-product of this process. a) The reactant(s) for this reaction are: b) The product(s) for this reaction are: 7. When sulfuric acid is added to ordinary table sugar (sucrose), C12H22011, a long black snake of elemental carbon forms, with the release of a cloud of steam (water vapor). a) The reactant(s) of this reaction are: b) The product(s) of this reaction are:Ch100: Fundamentals for Chemistry 2 Ch 8: Chemical Equations 8. Balance each of the following chemical equations. a) FeCl3(aq) + KOH(aq) → Fe(OH)3(s) + KCl(aq) b) Pb(C2H3O2)2(aq) + KI(aq) → PbI2(s) + KC2H3O2(aq) c) P4O10(s) + H2O(l) → H3PO4(aq) d) Li2O(s) + H2O(l) → LiOH(aq) e) Sb(s) + Cl2(g) → SbCl3(s) f) CH4(g) + H2O(g) → CO(g) + H2(g) g) FeS(s) + HCl(aq) → FeCl2(aq) + H2S(g) h) NH3(l) + H2O(l) → NH4OH(aq) i) H2SO4(aq) + NaHCO3(aq) → Na2SO4(aq) + CO2(g) + H2O(l) j) FeCl3(aq) + KI(aq) → Fe(I3)2(aq) + FeI2(aq) + KCl(aq)Ch100: Fundamentals for Chemistry 3 Ch 8: Chemical Equations 9. Classify the following chemical reactions in as many ways as possible. a) FeCl3(aq) + 3 KOH(aq) → Fe(OH)3(s) + 3 KCl(aq) b) Pb(C2H3O2)2(aq) + 2 KI(aq) → PbI2(s) + 2 KC2H3O2(aq) c) P4O10(s) + 6 H2O(l) → 4 H3PO4(aq) d) Li2O(s) + H2O(l) → 2 LiOH(aq) e) MnO2(s) + C(s) → Mn(s) + CO2(g) f) 2 Sb(s) + 3 Cl2(g) → 2 SbCl3(s) g) HNO3 + KOH → KNO3 + H2O h) FeS(s) + 2 HCl(aq) → FeCl2(aq) + H2S(g) i) C3H8 + 5 O2 → 3 CO2 + 4 H2O j) 2 H2O2 → 2 H2O + O2 k) CH4(g) + H2O(g) → CO(g) + 3 H2(g) l) 4 FeCl3(aq) + 12 KI(aq) → Fe(I3)2(aq) + 3 FeI2(aq) + 12 KCl(aq)Ch100: Fundamentals for Chemistry 4 Ch 8: Chemical Equations 10. Evaluate the following aqueous double displacement reactions: a) Aqueous solutions of ammonium hydroxide and copper (II) sulfate i. Predict the products and their physical state (using a table of solubility) ii. Write down the balanced chemical equation for the reaction b) Aqueous solutions of barium chloride and copper(II) sulfate i. Predict the products and their physical state (using a table of solubility) ii. Write down the balanced chemical equation for the reaction c) Aqueous solutions of silver nitrate and aluminum chloride i. Predict the products and their physical state (using a table of solubility) ii. Write down the balanced chemical equation for the reaction d) Aqueous solutions of sodium hydroxide and hydrochloric acid are combined in a test tube. i. Predict the products and their physical state (using a table of solubility) ii. Write down the balanced chemical equation for the
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