AP Chemistry Practice Test: Chapter 4 SHORT …

1 AP Chemistry Practice Test: Chapter 4 Name_____SHORT ANSWER. Write the word or phrase that best completes each statement or answers the ) What is the solvent in an aqueous solution?ESSAY. Write your answer in the space provided or on a separate sheet of ) Explain why water is a good solvent for ionic CHOICE. Choose the one alternative that best completes the statement or answers the ) Of the species below, only _____ is notan ) HClB) ArC) NaClD) KOHE) Rb2SO44) What is the molarity of an aqueous solution containing g of glucose (C6H12O6) in mL of solution?A) ) ) ) ) ) The concentration of species in 500 mL of a M solution of sodium sulfate is _____ M sodium ion and_____ M sulfate ) , ) , ) , ) , ) , ) What is the molarity of a solution prepared by diluting mL of M aqueous K2Cr2O7 to 500 mL?

2 A) ) ) ) ) ) When aqueous solutions of _____ are mixed, a precipitate ) NaI and KBrB) Li2CO3 and CsIC) K2SO4 and CrCl3D) NiBr2 and AgNO3E) KOH and Ba(NO3)28) What are the spectator ions in the reaction between KOH (aq) and HNO3(aq)?A) H+ and NO-3B) OH- onlyC) K+ and NO-3D) K+ and H+E) H+ and OH- SHORT ANSWER. Write the word or phrase that best completes each statement or answers the ) What is the concentration of HCl in a M solution of HCl? Why?E-1 MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the ) Lead ions can be precipitated from aqueous solutions by the addition of aqueous iodide:Pb2+ (aq) + 2I- (aq) PbI2 (s)Lead iodide is virtually insoluble in water so that the reaction appears to go to completion.

3 How manymilliliters of M H I(aq) must be added to a solution containing mol of Pb(NO3)2 (aq) to completelyprecipitate the lead?A) 113B) 225C) 10-3D) ) ) A mL aliquot of H2SO4 (aq) of unknown concentration was titrated with M NaOH (aq). It took of the base to reach the endpoint of the titration. What was the concentration (M) of the acid?A) ) ) ) ) ) The balanced half-reaction in which dichromate ion is reduced to chromium metal is a _____ ) two-electronB) six-electronC) four-electronD) twelve-electronE) three-electron13) What is the molarity (M) of an aqueous solution containing g of sucrose (C12H22O11) in mL ofsolution?A) ) x 10-3C) ) ) ) Pure acetic acid (HC2H3O2) is a liquid and is known as glacial acetic acid.

4 Calculate the molarity of a solutionprepared by dissolving mL of glacial acetic acid at 25eC in sufficient water to give mL of density of glacial acetic acid at 25eC is ) 103B) ) ) 10-4E) ) Which one of the following compounds is insoluble in water?A) Ag2CO3B) K2SO4C) ZnSD) Na2CO3E) Fe(NO3)316) With which of the following will ammonium ion form an insoluble salt?A) chlorideB) sulfateC) sulfate and carbonateD) carbonateE) none of the aboveE-217) Combining aqueous solutions of BaI2 and K2SO4affords a precipitate of BaSO4. Which ion(s) is/are spectatorions in the reaction?A) Ba2+ onlyB) K+ and I-C) SO42- and I-D) Ba2+ and SO42-E) K+ only18) A mL aliquot of HCl (aq) of unknown concentration was titrated with M NaOH (aq).

5 It took mLof the base to reach the endpoint of the titration. What was the concentration (M) of the acid?A) ) ) ) ) ) _____ electrons appear in the following half-reaction when it is 2S2O32-A) 4B) 1C) 2D) 6E) 320) What is the coefficient of the bromide ion when the following redox equation is balanced?BrO- + Fe(OH)2 Br- + Fe(OH)3 (basic solution)A) 4B) 5C) 2D) 1E) 321) What mass (g) of potassium chloride is contained in 430 mL of a potassium chloride solution that has a chlorideion concentration of M?A) ) ) ) ) ) What is the molarity (M) of an aqueous solution containing g of glucose (C6H12O6) in mL of solution?A) ) ) ) ) ) Which one of the following is a correct expression for molarity?

6 A) mmol solute/mL solutionB) mol solute/mL solventC) mol solute/L solventD)mmol solute/L solutionE) mol solute/kg solvent24) What is the concentration of chloride ions in a M solution of potassium chloride?A) MB) MC) MD) ME) M25) A stock solution of HNO3 is prepared and found to contain M of HNO3. If mL of the stock solution isdiluted to a final volume of L, the concentration of the diluted solution is _____ ) ) 284C) ) 710E) KeyTestname: ANSWER. Write the word or phrase that best completes each statement or answers the ) waterID: chem9b Write your answer in the space provided or on a separate sheet of ) The oxygen of water has a slight negative charge that is attracted to and surrounds the cation of the ionic substance,stabilizing it in solution.

7 The hydrogens of water have a slight positive charge and thus are attracted to and surroundthe anion of the ionic substance stabilizing it in : chem9b CHOICE. Choose the one alternative that best completes the statement or answers the ) BID: chem9b ) EID: chem9b ) AID: chem9b ) CID: chem9b ) DID: chem9b ) CID: chem9b ANSWER. Write the word or phrase that best completes each statement or answers the ) Essentially zero because HCl is a strong electrolyte and will be virtually completely ionized in solution leaving nointact HCl : chem9b CHOICE. Choose the one alternative that best completes the statement or answers the ) BID: chem9b ) BID: chem9b ) DID: chem9b ) EID: chem9b ) CID: chem9b ) CID: chem9b ) EID: chem9b ) BID: chem9b KeyTestname: ) EID: chem9b ) CID: chem9b ) DID: chem9b ) CID: chem9b ) EID: chem9b ) AID: chem9b ) AID: chem9b ) CID: chem9b