Chapter20 - Chapter 20 Homework 20.4 (a) Sn(s) Sn2+(aq) + 2...

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Chapter 20 Homework 20.4 (a) Sn(s) Sn 2+ (aq) + 2 e 2 H + (aq) + 2 e H 2 (g) Sn(s) + 2 H + (aq) Sn 2+ (aq) + H 2 (g) (b) Cr 2 O 7 2– (aq) + 14 H + (aq) + 6 e 2 Cr 3+ (aq) + 7 H 2 O( l ) 6[Fe 2+ (aq) Fe 3+ (aq) + e ] Cr 2 O 7 2– (aq) + 14 H + (aq) + 6 Fe 2+ (aq) 2 Cr 3+ (aq) + 7 H 2 O( l ) + 6 Fe 3+ (aq) (c) MnO 2 (s) + 4 H + (aq) + 2 e Mn 2+ (aq) + 2 H 2 O( l ) 2 Cl (aq) Cl 2 (g) + 2 e MnO 2 (s) + 4 H + (aq) +2 Cl (aq) Mn 2+ (aq) + 2 H 2 O( l ) + Cl 2 (g) 20.10 (a) Oxidation: Ag(s) Ag + (aq) + e Reduction: Cl 2 (g) + 2 e 2 Cl (aq) Overall: 2 Ag(s) + Cl 2 (g) 2 Ag + (aq) + 2 Cl (aq) (b) Oxidation occurs in the anode compartment and reduction occurs in the cathode compartment. (c) Electrons in the external circuit flow from the Ag electrode to the positive (site of Cl 2 reduction) electrode. Negative ions move in the salt bridge from the Cl 2 /Cl half-cell to the Ag/Ag + half-cell. 20.16 (a) I
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This note was uploaded on 11/16/2011 for the course CHEM 1212k taught by Professor Wood during the Spring '08 term at Valdosta State University .

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Chapter20 - Chapter 20 Homework 20.4 (a) Sn(s) Sn2+(aq) + 2...

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