# 4 of 9 121408 310 am use the link standard reduction

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4 of 9 12/14/08 3:10 AM

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Use the link Standard Reduction Potentials or Table 11.1 found on p. 252 of your textbook to answer the following questions. Write a balanced redox equations and to determine both the cell potential and the number of electrons transferred for the spontaneous redox process that occurs when the following couples are connected. See "Instructions for Writing Chemical Equations" at the top of the assignment. H 1+ /H 2 + Ag 1+ /Ag 2Ag^1+ 2Ag^1+ + H2 H2 2Ag 2Ag + 2H^1+ 2H^1+ Coeff Ox 1 Coeff Red 2 Coeff Red 1 Coeff Ox 2 E o = .8 0.80 V n = 2 2 H 1+ /H 2 + Pb 2+ /Pb 2H^1+ 2H^1+ + Pb Pb H2 H2 + Pb^2+ Pb^2+ E o = .13 0.13 V n = 2 2 Al 3+ /Al + Cu 2+ /Cu 3Cu^2+ 3Cu^2+ + 2Al 2Al 3Cu 3Cu + 2Al^3+ 2Al^3+ E o = 2 2.00 V n = 6 6 HW18 ... 5 of 9 12/14/08 3:10 AM
Fe 2+ /Fe + Zn 2+ /Zn Fe^2+ Fe^2+ + Zn Zn Fe Fe + Zn^2+ Zn^2+ E o = .32 0.32 V n = 2 2 6. 0.55/0.55 points | 3/5 submissions Use the link Standard Reduction Potentials or Table 11.1 found on p. 252 of your textbook to answer the following questions. Write net equations for the spontaneous redox reactions that occur during the following or none (all lower case) if there is no extensive reaction. See "Writing Chemical Equations" at the top of the assignment. a) Iron metal is dipped into a Ni 2+ solution Ni^2+ Ni^2+ + Fe Fe Ni Ni + Fe^2+ Fe^2+ Coeff Ox 1 Coeff Red 2 Coeff Red 1 Coeff Ox 2 b) Copper metal is added to hydrochloric acid none none + none none none none + none none Coeff Ox 1 Coeff Red 2 Coeff Red 1 Coeff Ox 2 c) A silver wire is added to nitric acid (HNO 3 ) HW18 ... 6 of 9 12/14/08 3:10 AM

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NO3^1- NO3^1- + 3Ag 3Ag + 4H^1+ 4H^1+ NO NO + 3Ag^1+ 3Ag^1+ + 2H2O 2H2O Coeff Ox 1 Coeff Red 2 Coeff Other Coeff Red 1 Coeff Ox 2 Coeff Other d) Magnesium metal is added to water 2H2O 2H2O + Mg Mg H2 H2 + Mg^2+ Mg^2+ + 2OH^1- 2OH^1- Coeff Ox 1 Coeff Red 2 Coeff Red 1 Coeff Ox 2 Coeff Other e) Chromium metal is added to a solution of Mg 2+ none none + none none none none + none none Coeff Ox 1 Coeff Coeff Red 2 Coeff Red 1 Coeff Ox 2 7. 0.55/0.55 points | 1/5 submissions No Marks. To determine what portion of the question you have correct, click on question score at the top of the assignment. Be sure to refresh question score after each
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