Chemistry 2 Chapter 9 Worksheet Key 1. Determine the oxidation number for the atoms of each element in the following formulas. a. Pa b. PF, C. PHI d. PO e. HPO P P P H H Ni N F H O P f. HPO 8. NISO h. NO i. Mn(PO)2 Mn 2. For each of the following equations, write the oxidation number for each atom above its symbol in the equation, and indicate whether the reaction is a redox reaction. If the reaction is redox, identify what is oxidized, what is reduced, the oxidizing agent, and the reducing agent. a. 2HNO3(aq) + 3HS(aq) 2NO(g) + 3S(s) + 4HO() P O S O b. 2AgzCrO4(s) + 4HNO3(aq) 4AgNO3(aq) + HCrO72(aq) + HO(l) c. 2MnO4 (aq) + 3103 (aq) + HO(l) 2MnO (s) + 3104 (aq) + 2OH(aq) 4. Classify each of these reactions with respect to the following categories: combination reaction, decomposition reaction, combustion reaction, and single-displacement reaction. W(s) + 3HO() A a. 3H2(g) WO(s) b. 21409(5) 21:0(s) + 2l(s) + 302(g) A 2NaNO3(s) 2NaNO(s) + O2(g) c. d. (g) + 2KBr(aq) 2KCl(aq) + Bra() 5. Write a balanced equation for the complete combustion of CH5OH(/).