SCH4U – FINAL EXAM REVIEW Chapter 1 1. Draw and name the family to which each of the following belongs: 6 marks a) N,N-dimethyl-3-methylbutanamide Family:_________________________ b) 3-chlorobutanoic acid Family:__________________________ c) 4,5-dimethyl-2-heptanol Family: __________________________ Chapter 3 3. a) Draw an orbital diagram for F -. 2 marks b) Draw the condensed electron configuration for Selenium, Se. 2 marks Chapter 4 4. Draw the Lewis structure for each of the following compounds/ions and predict the shape using VESPR. 4 marks a) CH2O Shape: _______________________ b) SF6 Shape: _______________________ 5. A metal, X, reacts with chlorine to form the compound XCl 2. The metal’s third ionization energy is significantly larger than its first and second ionization energies. 2 marks a) To what group does the metal likely belong? b) What is the valence electron configuration of an atom of the metal in its ground state? Chapter 5 6. Calculate Ho for the following reaction using the listed standard enthapy of reaction data: 4 marks 2N2(g) + 5O2(g) 2N2O5(s) N2(g) + 3O2(g) + H2(g) 2HNO3(aq) Ho = -414.0 kJ N2O5(s) + H2O(l) 2H2(g) + O2(g) 2HNO3(aq) 2H2O(l) Ho = -86.0 kJ Ho = -571.6 kJ Chapter 6 7. Consider the following series of potential energy diagrams. a) i) Which diagram represents the fastest reaction at room temperature? 1 mark ii) Explain your choice. 1 mark b) i) Which diagram represents the reaction of two solids at room temperature? 1 mark ii) Explain your choice. 1 mark Chapter 7 8. 0.440 mol/L of IBr is allowed to reach equilibrium, as shown below. The equilibrium constant is 6.62 x 10 -3. What are the equilibrium concentrations? 6 marks 2IBr(g) I2(g) + Br2(g) 2IBr(g) + I2(g) Br2(g) I C E Chapter 8 9. Lactic acid, C3H6O3, builds up in human muscles during anaerobic exercise. If the initial concentration of lactic acid is 0.12 mol/L and the pH is 2.39, what is Ka for lactic acid? 6 marks C3H6O3(aq) C3H6O3(aq) I C E + H2O(l) + H2O(l) H3O+(aq) + C3H5O3−(aq) H3O+(aq) + C3H5O3−(aq) Chapter 9 10. Calculate the molar solubility of CaF 2(s) in pure water given that the Ksp for CaF2 is 3.95 x 10-11. 4 marks Chapter 10 11. Use this redox equation for a) through e). 6 marks KMnO4 + HCl ➔ KCl + MnCl2 + Cl2 + H2O a) What is the oxidation number of Cl in Cl2? ______ b) How does the oxidation number of Mn change in the reaction? State the before and after oxidation numbers. c) Which reactant is the oxidizing agent? _________________ d) What oxidation number would be assigned to O in H2O? ________ e) How would this oxidation number change if the formula was H2O2? Chapter 11 12. Use the following shorthand representation to sketch a galvanic cell. Include as much information as you can. Identify the anode and cathode, and write the half-reaction and the overall cell reaction. 5 marks Zn(s) | Zn2+(aq) || Ag+(aq) | Ag(s) HINT: in the shorthand representation the anode is always shown on the left.