University:
Winston-Salem Forsyth County Schools
Course:
AP Chemistry
Academic year:

2013
Views:

299

Pages:

2
Author:

keniaeveyik

Advanced Reactions Unit HN Homework Answers Oxidation Number Practice For each of the following list the oxidation numbers for each element: (You must show work) 21. S2O3 S= +2, O= -2 5. AlCl3 Al= +3, Cl= -1 2. N2H4 N= -2, H= +1 6. KClO3 K= +1, Cl = +5, O= -2 3. HIO3 H= +1, O= -2, I= +5 7. PO43P= +5, O= -2 H= +1, O= -1 (peroxide) 4. NOF O= -2, F= -1, N= +3 8. H2O2 Equilibrium Constant Practice For each of the following reactants, write the equilibrium constant expression: 1. Keq = 2. Keq = 3. Keq = 4. Keq = 5. Keq = LeChatelier’s Principle Practice Consider the following equilibrium reaction: exothermic N2(g) + 3H2(g) 2NH3(g) For each of the following scenarios, specify the direction in which the equilibrium will shift: 1. NH3 is removed – shifts R 2. The pressure on the reaction is decreased – shifts L 3. N2 is added – shifts R 4. The mixture is heated – shifts L Acid Base Reaction Practice Write out the following reactions using appropriate symbols and balance them. 1. 2HCl(aq) + Ba(OH)2(aq) BaCl2(aq) + 2H2O(ℓ) 2. HNO3(aq) + RbOH(aq) RbNO3(aq) + H2O(ℓ) 3. 2HC2H3O2(aq) + Ca(OH)2(s) Ca(C2H3O2)2(aq) + 2H2O(ℓ) 4. H2SO4(aq) + 2NaOH(s) Na2SO4(aq) + 2H2O(ℓ) 5. 3H2SO4(aq) + 2Fe(OH)3(s) Fe2(SO4)3(aq) + 6H2O(ℓ) 6. HNO3(aq) + NaC2H3O2(s) HC2H3O2(aq) + NaNO3(aq) pH Calculations Practice You must show the equations used and the substitutions in order to receive credit for this. On tonight’s homework, write Go Wolfpack ON THE BACK (even if you are a Carolina fan)– please do not tell your friends! 1. 2. 3. 4. 5. 6. + -3 What is the pH of a solution with [H3O ] of 1.50x10 M? 2.82 What is the pH of a solution with [OH ] of 0.0325M? 12.5 What is the pOH of a solution with [OH ] of 0.00025M? 3.6 + -9 What is the pOH of a solution with [H3O ] of 5.0x10 M? 5.7 What is the pH of a 0.15M hydrochloric acid solution? 0.82 A saturated calcium hydroxide solution has a concentration of 0.0118M. What is the pH of this solution? 12.4 7. Rainwater is naturally acidic because it tends to be nearly saturated with carbon dioxide. A saturated + solution of carbon dioxide under typical atmospheric conditions has a pH of 5.65. What is the [H3O ] -6 in this solution? 2.24x10 M 8. The pH of Diet Dr. Pepper is around 2.4. What is the [OH ] in Diet Dr. Pepper? 2.5x10-12M