Assignment 3

(Points 1) Which of the following statements is not true concerning the following aqueous equilibrium H(aq) NO3-(aq) HNO3 (aq) HTMLCONTROL Forms.HTMLOption.1 a. The equilibrium lies to the left. HTMLCONTROL Forms.HTMLOption.1 b. The equilibrium lies to the right. HTMLCONTROL Forms.HTMLOption.1 c. The concentration of protons equals the concentration of aqueous HNO3. HTMLCONTROL Forms.HTMLOption.1 d. The concentration of protons equals the concentration of nitrate. HTMLCONTROL Forms.HTMLOption.1 e. Both B and C. HTMLCONTROL Forms.HTMLHidden.1 HYPERLINK javascriptsaveAnswer(saveResponse.dowebct,0) Save Answer INCLUDEPICTURE https//connect.mycampus.ca/webct/images/shim.gif MERGEFORMATINET 2. (Points 1) Match each acid or base to the appropriate description Column preview H2SO4Lewis acidH2SO3Weak Bronsted acidBCl3Weak Bronsted baseOH-Strong Bronsted acidNH3Strong Bronsted base Matching pairs H2SO4 HTMLCONTROL Forms.HTMLSelect.1 H2SO3 HTMLCONTROL Forms.HTMLSelect.1 BCl3 HTMLCONTROL Forms.HTMLSelect.1 OH- HTMLCONTROL Forms.HTMLSelect.1 NH3 HTMLCONTROL Forms.HTMLSelect.1 HTMLCONTROL Forms.HTMLHidden.1 HYPERLINK javascriptsaveAnswer(saveResponse.dowebct,1) Save Answer INCLUDEPICTURE https//connect.mycampus.ca/webct/images/shim.gif MERGEFORMATINET 3. (Points 1) What is the degree of ionization for 0.504 M aqueous benzoic acid HTMLCONTROL Forms.HTMLOption.1 a. 0.8 HTMLCONTROL Forms.HTMLOption.1 b. 1.1 HTMLCONTROL Forms.HTMLOption.1 c. 1.6 HTMLCONTROL Forms.HTMLOption.1 d. 98.9 HTMLCONTROL Forms.HTMLOption.1 e. 99.2 HTMLCONTROL Forms.HTMLHidden.1 HYPERLINK javascriptsaveAnswer(saveResponse.dowebct,2) Save Answer INCLUDEPICTURE https//connect.mycampus.ca/webct/images/shim.gif MERGEFORMATINET 4. (Points 1) Which of the following acids produces the weakest conjugate base (smallest Kb) HTMLCONTROL Forms.HTMLOption.1 a. HNO2 HTMLCONTROL Forms.HTMLOption.1 b. HNO3 HTMLCONTROL Forms.HTMLOption.1 c. NH4 HTMLCONTROL Forms.HTMLOption.1 d. H2O HTMLCONTROL Forms.HTMLOption.1 e. CH3CO2H HTMLCONTROL Forms.HTMLHidden.1 HYPERLINK javascriptsaveAnswer(saveResponse.dowebct,3) Save Answer INCLUDEPICTURE https//connect.mycampus.ca/webct/images/shim.gif MERGEFORMATINET 5. (Points 1) Match the following bases with the corresponding conjugate acid HTMLCONTROL Forms.HTMLHidden.1 HTMLCONTROL Forms.HTMLHidden.1 HTMLCONTROL Forms.HTMLHidden.1 HTMLCONTROL Forms.HTMLHidden.1 HTMLCONTROL Forms.HTMLHidden.1 Column preview 1. (CH3)2NHa. (CH3)2NH22. (CH3)2N-b. HO-3. HO-c. H3O4. H2Od. (CH3)2NH5. O2-e. H2O Matching pairs 1 HTMLCONTROL Forms.HTMLSelect.1 2 HTMLCONTROL Forms.HTMLSelect.1 3 HTMLCONTROL Forms.HTMLSelect.1 4 HTMLCONTROL Forms.HTMLSelect.1 5 HTMLCONTROL Forms.HTMLSelect.1 HTMLCONTROL Forms.HTMLHidden.1 HYPERLINK javascriptsaveAnswer(saveResponse.dowebct,4) Save Answer INCLUDEPICTURE https//connect.mycampus.ca/webct/images/shim.gif MERGEFORMATINET 6. (Points 1) Rank the following acids based on increasing Ka Matching pairs HBrO2 HTMLCONTROL Forms.HTMLSelect.1 HBrO3 HTMLCONTROL Forms.HTMLSelect.1 HBrO4 HTMLCONTROL Forms.HTMLSelect.1 HClO4 HTMLCONTROL Forms.HTMLSelect.1 HBrO HTMLCONTROL Forms.HTMLSelect.1 HTMLCONTROL Forms.HTMLHidden.1 HYPERLINK javascriptsaveAnswer(saveResponse.dowebct,5) Save Answer INCLUDEPICTURE https//connect.mycampus.ca/webct/images/shim.gif MERGEFORMATINET 7. (Points 1) Which of the following statements is not true for a neutral aqueous solution HTMLCONTROL Forms.HTMLOption.1 a. H OH- HTMLCONTROL Forms.HTMLOption.1 b. OH- 10-14 HTMLCONTROL Forms.HTMLOption.1 c. pH pOH HTMLCONTROL Forms.HTMLOption.1 d. H OH- 10-14 HTMLCONTROL Forms.HTMLOption.1 e. Both B and C. HTMLCONTROL Forms.HTMLHidden.1 HYPERLINK javascriptsaveAnswer(saveResponse.dowebct,6) Save Answer INCLUDEPICTURE https//connect.mycampus.ca/webct/images/shim.gif MERGEFORMATINET 8. (Points 1) What is the pH of 3.5 x 10-3 M HClO4 HTMLCONTROL Forms.HTMLOption.1 a. 3.5 x 10-3 HTMLCONTROL Forms.HTMLOption.1 b. 2.5 HTMLCONTROL Forms.HTMLOption.1 c. 3.0 HTMLCONTROL Forms.HTMLOption.1 d. 3.5 HTMLCONTROL Forms.HTMLOption.1 e. 10.5 HTMLCONTROL Forms.HTMLHidden.1 HYPERLINK javascriptsaveAnswer(saveResponse.dowebct,7) Save Answer INCLUDEPICTURE https//connect.mycampus.ca/webct/images/shim.gif MERGEFORMATINET 9. (Points 1) What is the pH of 1.20 M HClO2 HTMLCONTROL Forms.HTMLOption.1 a. -0.08 HTMLCONTROL Forms.HTMLOption.1 b. 0.08 HTMLCONTROL Forms.HTMLOption.1 c. 0.66 HTMLCONTROL Forms.HTMLOption.1 d. 0.96 HTMLCONTROL Forms.HTMLOption.1 e. 1.96 HTMLCONTROL Forms.HTMLHidden.1 HYPERLINK javascriptsaveAnswer(saveResponse.dowebct,8) Save Answer INCLUDEPICTURE https//connect.mycampus.ca/webct/images/shim.gif MERGEFORMATINET 10. (Points 1) What is the pH of 0.220 M sodium acetate HTMLCONTROL Forms.HTMLOption.1 a. 13.34 HTMLCONTROL Forms.HTMLOption.1 b. 9.05 HTMLCONTROL Forms.HTMLOption.1 c. 4.95 HTMLCONTROL Forms.HTMLOption.1 d. 4.65 HTMLCONTROL Forms.HTMLOption.1 e. 0.66 HTMLCONTROL Forms.HTMLHidden.1 HYPERLINK javascriptsaveAnswer(saveResponse.dowebct,9) Save Answer INCLUDEPICTURE https//connect.mycampus.ca/webct/images/shim.gif MERGEFORMATINET 11. (Points 1) What is the pH of an aqueous solution prepared with 150 mL of 0.150 M ammonia and 15.0 mL of 1.20 M HCl HTMLCONTROL Forms.HTMLOption.1 a. 9.85 HTMLCONTROL Forms.HTMLOption.1 b. 9.35 HTMLCONTROL Forms.HTMLOption.1 c. 9.25 HTMLCONTROL Forms.HTMLOption.1 d. 9.15 HTMLCONTROL Forms.HTMLOption.1 e. 8.65 HTMLCONTROL Forms.HTMLHidden.1 HYPERLINK javascriptsaveAnswer(saveResponse.dowebct,10) Save Answer INCLUDEPICTURE https//connect.mycampus.ca/webct/images/shim.gif MERGEFORMATINET 12. (Points 1) What is the solubility of lead (II) bromide in pure water HTMLCONTROL Forms.HTMLOption.1 a. 1.9 x 10-2 M HTMLCONTROL Forms.HTMLOption.1 b. 1.5 x 10-2 M HTMLCONTROL Forms.HTMLOption.1 c. 1.2 x 10-2 M HTMLCONTROL Forms.HTMLOption.1 d. 2.6 x 10-3 M HTMLCONTROL Forms.HTMLOption.1 e. 6.6 x 10-6 M HTMLCONTROL Forms.HTMLHidden.1 HYPERLINK javascriptsaveAnswer(saveResponse.dowebct,11) Save Answer INCLUDEPICTURE https//connect.mycampus.ca/webct/images/shim.gif MERGEFORMATINET 13. (Points 1) What is the solubility of lead (II) bromide in 1.2 M potassium bromide (KBr) HTMLCONTROL Forms.HTMLOption.1 a. 4.6 x 10-6 M HTMLCONTROL Forms.HTMLOption.1 b. 5.5 x 10-6 M HTMLCONTROL Forms.HTMLOption.1 c. 2.6 x 10-3 M HTMLCONTROL Forms.HTMLOption.1 d. 1.2 x 10-2 M HTMLCONTROL Forms.HTMLOption.1 e. 1.9 x 10-2 M HTMLCONTROL Forms.HTMLHidden.1 HYPERLINK javascriptsaveAnswer(saveResponse.dowebct,12) Save Answer INCLUDEPICTURE https//connect.mycampus.ca/webct/images/shim.gif MERGEFORMATINET 14. (Points 1) What is the change in oxidation number for chromium in the following aqueous reaction 2 H Cr2O72- 3 Mn2 - 2 Cr3 3 MnO2 (s) H2O HTMLCONTROL Forms.HTMLOption.1 a. 12 to 6 HTMLCONTROL Forms.HTMLOption.1 b. -2 to 3 HTMLCONTROL Forms.HTMLOption.1 c. -2 to 6 HTMLCONTROL Forms.HTMLOption.1 d. 6 to 3 HTMLCONTROL Forms.HTMLOption.1 e. 6 to 0 HTMLCONTROL Forms.HTMLHidden.1 HYPERLINK javascriptsaveAnswer(saveResponse.dowebct,13) Save Answer INCLUDEPICTURE https//connect.mycampus.ca/webct/images/shim.gif MERGEFORMATINET 15. (Points 1) Which of the following statements is not true for an electrolytic cell HTMLCONTROL Forms.HTMLOption.1 a. Electrons will spontaneously flow between the anode and cathode. HTMLCONTROL Forms.HTMLOption.1 b. Electrons will not spontaneously flow between the anode and cathode. HTMLCONTROL Forms.HTMLOption.1 c. Energy must be applied to cause electrons to flow between the anode and cathode. HTMLCONTROL Forms.HTMLOption.1 d. An oxidation half-reaction occurs at the anode. HTMLCONTROL Forms.HTMLOption.1 e. Electrons flow into the the cathode. HTMLCONTROL Forms.HTMLHidden.1 HYPERLINK javascriptsaveAnswer(saveResponse.dowebct,14) Save Answer INCLUDEPICTURE https//connect.mycampus.ca/webct/images/shim.gif MERGEFORMATINET 16. (Points 1) Which of the following elements does not appear in the table of standard reduction potentials in Appendix 6 of the textbook HTMLCONTROL Forms.HTMLOption.1 a. Gold HTMLCONTROL Forms.HTMLOption.1 b. Iodine HTMLCONTROL Forms.HTMLOption.1 c. Manganese HTMLCONTROL Forms.HTMLOption.1 d. Platinum HTMLCONTROL Forms.HTMLOption.1 e. Sodium HTMLCONTROL Forms.HTMLHidden.1 HYPERLINK javascriptsaveAnswer(saveResponse.dowebct,15) Save Answer INCLUDEPICTURE https//connect.mycampus.ca/webct/images/shim.gif MERGEFORMATINET 17. (Points 1) What is the value of standard cell potential (Eocell) for the following reaction Ag(aq) Cr2(aq) - Ag(s) Cr3(aq) HTMLCONTROL Forms.HTMLOption.1 a. -1.21 V HTMLCONTROL Forms.HTMLOption.1 b. -0.39 V HTMLCONTROL Forms.HTMLOption.1 c. 0.41 V HTMLCONTROL Forms.HTMLOption.1 d. 0.80 V HTMLCONTROL Forms.HTMLOption.1 e. 1.21 V HTMLCONTROL Forms.HTMLHidden.1 HYPERLINK javascriptsaveAnswer(saveResponse.dowebct,16) Save Answer INCLUDEPICTURE https//connect.mycampus.ca/webct/images/shim.gif MERGEFORMATINET 18. (Points 1) What is the value of standard cell potential (Eocell) for the following reaction Sn4(aq) Cu(s) - Sn2(aq) Cu2(aq) HTMLCONTROL Forms.HTMLOption.1 a. -0.49 V HTMLCONTROL Forms.HTMLOption.1 b. -0.19 HTMLCONTROL Forms.HTMLOption.1 c. 0.15 HTMLCONTROL Forms.HTMLOption.1 d. 0.19 V HTMLCONTROL Forms.HTMLOption.1 e. 0.49 V HTMLCONTROL Forms.HTMLHidden.1 HYPERLINK javascriptsaveAnswer(saveResponse.dowebct,17) Save Answer INCLUDEPICTURE https//connect.mycampus.ca/webct/images/shim.gif MERGEFORMATINET 19. (Points 1) How many electrons are transferred (n) in the following redox reaction 3 Fe3(aq) MnO2 (s) 4 OH-(aq) - 3 Fe2(aq) MnO4- (aq) 2 H2O(s) HTMLCONTROL Forms.HTMLOption.1 a. 1 HTMLCONTROL Forms.HTMLOption.1 b. 2 HTMLCONTROL Forms.HTMLOption.1 c. 3 HTMLCONTROL Forms.HTMLOption.1 d. 4 HTMLCONTROL Forms.HTMLOption.1 e. 5 HTMLCONTROL Forms.HTMLHidden.1 HYPERLINK javascriptsaveAnswer(saveResponse.dowebct,18) Save Answer INCLUDEPICTURE https//connect.mycampus.ca/webct/images/shim.gif MERGEFORMATINET 20. (Points 1) What is the value of standard cell potential (Eo) for the following reaction 3 Fe3(aq) MnO2 (s) 4 OH-(aq) - 3 Fe2(aq) MnO4- (s) 2 H2O HTMLCONTROL Forms.HTMLOption.1 a. -1.36 V HTMLCONTROL Forms.HTMLOption.1 b. -0.18 V HTMLCONTROL Forms.HTMLOption.1 c. 0.18 V HTMLCONTROL Forms.HTMLOption.1 d. 1.36 V HTMLCONTROL Forms.HTMLOption.1 e. 1.72 V HTMLCONTROL Forms.HTMLHidden.1 HYPERLINK javascriptsaveAnswer(saveResponse.dowebct,19) Save Answer INCLUDEPICTURE https//connect.mycampus.ca/webct/images/shim.gif MERGEFORMATINET 21. (Points 1) What is the value of standard change in Gibbs free energy (deltaGo) of the following reaction 3 Fe3(aq) MnO2 (s) 4 OH-(aq) - 3 Fe2(aq) MnO4- (s) 2 H2O HTMLCONTROL Forms.HTMLOption.1 a. 390 kJ/mole HTMLCONTROL Forms.HTMLOption.1 b. 52 kJ/mole HTMLCONTROL Forms.HTMLOption.1 c. -52 kJ/mole HTMLCONTROL Forms.HTMLOption.1 d. -390 kJ/mole HTMLCONTROL Forms.HTMLOption.1 e. -500 kJ/mole HTMLCONTROL Forms.HTMLHidden.1 HYPERLINK javascriptsaveAnswer(saveResponse.dowebct,20) Save Answer INCLUDEPICTURE https//connect.mycampus.ca/webct/images/shim.gif MERGEFORMATINET 22. (Points 1) What half reaction occurs at the cathode in the following electrochemical cell if all the aqueous ions are at 1 M Pt(s) Cu(aq) , Cu2(aq) Fe2 (aq) , Fe3(aq) Pt(s) HTMLCONTROL Forms.HTMLOption.1 a. Pt e- - Pt HTMLCONTROL Forms.HTMLOption.1 b. Fe3 e- - Fe2 HTMLCONTROL Forms.HTMLOption.1 c. Fe2 - Fe2 e- HTMLCONTROL Forms.HTMLOption.1 d. Cu2 e- - Cu HTMLCONTROL Forms.HTMLOption.1 e. Cu - Cu2 e- HTMLCONTROL Forms.HTMLHidden.1 HYPERLINK javascriptsaveAnswer(saveResponse.dowebct,21) Save Answer INCLUDEPICTURE https//connect.mycampus.ca/webct/images/shim.gif MERGEFORMATINET 23. (Points 1) What is the predicted value of cell potential (Eo) for the following electrochemical cell at 298 K Pt(s) Ag(s) Ag(0.225 M) Hg2(0.105 M) Hg(l) Pt(s) HTMLCONTROL Forms.HTMLOption.1 a. 0.03 V HTMLCONTROL Forms.HTMLOption.1 b. 0.04 V HTMLCONTROL Forms.HTMLOption.1 c. 0.05 V HTMLCONTROL Forms.HTMLOption.1 d. 0.06 V HTMLCONTROL Forms.HTMLOption.1 e. 0.07 V HTMLCONTROL Forms.HTMLHidden.1 HYPERLINK javascriptsaveAnswer(saveResponse.dowebct,22) Save Answer INCLUDEPICTURE https//connect.mycampus.ca/webct/images/shim.gif MERGEFORMATINET 24. (Points 1) What is the concentration of Cu(aq) in the following electrochemical cell if Ecell 0.501 V Cd(s) Cd2(0.120 M) Cu(aq), Cu2(0.021 M) Pt(s) HTMLCONTROL Forms.HTMLOption.1 a. 3.57 M HTMLCONTROL Forms.HTMLOption.1 b. 1.93 M HTMLCONTROL Forms.HTMLOption.1 c. 0.52 M HTMLCONTROL Forms.HTMLOption.1 d. 0.18 M HTMLCONTROL Forms.HTMLOption.1 e. 0.03 M 4FfhV)dwZ8 2rbRyyU 2y_yGp3Jaq9D@9-(-QhDycqKZ)Nf JBE geVRdERcTUJuFTmzzA-cWvpmYX yV gbUxVf U A xlz EY)fM1U_nECd PIDQ7gD V@dq8M5T4/@2@q Qyx BiyT x x biyT jsXc71Mo3F2Fo7 3 4 R DocumentThisDocument/H00000000 NameProject HelpContextID0 VersionCompatible32393222000 CMG6A68B2E95FED5FED5FED5FED DPB1311CB407541754175 GCBCBE643FA4E9A5E9A516 Host Extender Info H000000013832D640-CF90-11CF-8E43-00A0C911005AVBEH00000000 H00000002000209F2-0000-0000-C000-000000000046Word8.0H00000000