Ch 04 Practice Problems - AP Chemistry

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Ch 04 Practice Problems - AP Chemistry

Name:_______________________________ Date:_________________ Hr:____AP CHEMISTRYCh 4 – Types of Chemical Reactions and Solution StoichiometryPRACTICE PROBLEMSSOLUTION CONCENTRATIONSuggested Homework Problems: pp170-17717, 19, 21, 23, 27, 35, 37, 43, 49, 53, 57, 59, 63, 71, 73, 7529. Describe how you would prepare 2.00 L of each of the following solutions.a. 0.250 M NaOH from solid NaOHb. 0.250 M NaOH from 1.00 M NaOH stock solutionc. 0.100 M K 2 CrO 4 from solid K 2 CrO 4d. 0.100 M K 2 CrO 4 from 1.75 M K 2 CrO 4 stock solutionPage 1 of 82013 mrluzio.com/apchem04


Name:_______________________________ Date:_________________ Hr:____AP CHEMISTRYCh 4 – Types of Chemical Reactions and Solution StoichiometryPRECIPITATE REACTIONSPRACTICE PROBLEMS36. On the bases of the general solubility rules given in class, predict which of the followingsubstances are likely to be soluble in water.a. zinc chlorideb. lead(II) nitratec. lead(II) sulfated. sodium iodidee. cobalt(III) sulfidef. chromium(III) hydroxideg. magnesium carbonateh. ammonium carbonate38. When the following solutions are mixed together, what precipitate (if any) will form?a. Hg 2 (NO 3 ) 2 (aq) + CuSO 4 (aq)b. Ni(NO 3 ) 2 (aq) + CaCl 2 (aq)c. K 2 CO 3 (aq) + MgI 2 (aq)d. Na 2 CrO 4 (aq) + AlBr 3 (aq)Page 2 of 82013 mrluzio.com/apchem04


Name:_______________________________ Date:_________________ Hr:____AP CHEMISTRYCh 4 – Types of Chemical Reactions and Solution StoichiometryPRECIPITATE REACTIONS AND EQUATIONSPRACTICE PROBLEMS44. Write net ionic equations for the reaction, if any, that occurs when aqueous solutions ofthe following are mixed.a. chromium(III) chloride and sodium hydroxideb. silver nitrate and ammonium carbonatec. copper(II) sulfate and mercury(I) nitrated. strontium nitrate and potassium iodidee. For one of the above reactions, draw a particulate level diagram for the net ionic eqn.Page 3 of 82013 mrluzio.com/apchem04


Name:_______________________________ Date:_________________ Hr:____AP CHEMISTRYCh 4 – Types of Chemical Reactions and Solution StoichiometryPRACTICE PROBLEMS48. What volume of 0.100 M Na 3 PO 4 is required to precipitate all the lead(II) ions from 150.0mL of 0.250 M Pb(NO 3 ) 2 ?50. What mass of precipitate can be produced when 100.0 mL of a 0.100 M solution of bariumchloride is mixed with 100.0 mL of a 0.100 M solution of iron(III) sulfate?Page 4 of 82013 mrluzio.com/apchem04


Name:_______________________________ Date:_________________ Hr:____AP CHEMISTRYCh 4 – Types of Chemical Reactions and Solution StoichiometryACID-BASE REACTIONSPRACTICE PROBLEMS58. Write the balanced formula, complete ionic, and net ionic equations for the reactions thatoccur when the following are mixed.a. solid silver hydroxide and hydrobromic acidb. aqueous strontium hydroxide and hydroiodic acidc. solid chromium(III) hydroxide and nitric acidPage 5 of 82013 mrluzio.com/apchem04


Name:_______________________________ Date:_________________ Hr:____AP CHEMISTRYCh 4 – Types of Chemical Reactions and Solution StoichiometryPRACTICE PROBLEMS64. What volume of 0.0200 M calcium hydroxide is required to neutralize 35.00 mL of 0.0500M nitric acid?66. The concentration of a certain sodium hydroxide solution was determined by using thesolution to titrate a sample of potassium hydrogen phthalate (abbreviated as KHP). KHP is anacid with one acidic hydrogen and a molar mass of 204.22 g/mol. In the titration, 34.67 mL ofthe sodium hydroxide solution was required to react with 0.1082 g KHP. Calculate the molarityof the sodium hydroxide.Page 6 of 82013 mrluzio.com/apchem04


Name:_______________________________ Date:_________________ Hr:____AP CHEMISTRYCh 4 – Types of Chemical Reactions and Solution StoichiometryOXIDATION-REDUCTION REACTIONSPRACTICE PROBLEMS72. Specify which of the following equations represent oxidation-reduction reactions, andindicate the oxidizing agent, the reducing agent, the species being oxidized, and the speciesbeing reduced.a. CH 4 (g) + H 2 O(g) CO(g) + 3 H 2 (g)b. 2 AgNO 3 (aq) + Cu(s) Cu(NO 3 ) 2 (aq) + 2 Ag(s)c. Zn(s) + 2 HCl(aq) ZnCl 2 (aq) + H 2 (g)d. 2 H + (aq) + 2 CrO 4 2- (aq) Cr 2 O 7 2- (aq) + H 2 O(l)74. Balance the following oxidation-reduction reactions that occur in acidic solution using thehalf-reaction method.a. Cu(s) + NO 3 - (aq) Cu 2+ (aq) + NO(g)c. Pb(s) + PbO 2 (s) + H 2 SO 4 (aq) PbSO 4 (s)e. H 3 AsO 4 (aq) + Zn(s) AsH 3 (g) + Zn 2+ (aq)Page 7 of 82013 mrluzio.com/apchem04


Name:_______________________________ Date:_________________ Hr:____AP CHEMISTRYCh 4 – Types of Chemical Reactions and Solution StoichiometryPRACTICE PROBLEMS76. Balance the following oxidation-reduction reactions that occur in basic solution using thehalf reaction method.a. Cr(s) + CrO 4 2- (aq) Cr(OH) 3 (s)b. MnO 4 - (aq) + S 2- (aq) MnS(s) + S(s)c. CN - (aq) + MnO 4 - (aq) CNO - (aq) + MnO 2 (s)Page 8 of 82013 mrluzio.com/apchem04

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