Chem 04-24 - Chemistry 102 1 The standard cell potential E...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Chemistry 102 04/24/08 1. The standard cell potential, E ° (cell), for the reaction of silver ions with copper metal is + .46 V at 25 ° C. Calculate ∆ G ° for this reaction. Cu^2+(aq) + 2e- Cu(s) E ° = +.34 Anode (-) (Oxidation) Ag^+(aq) + e- Ag(s) E ° = .80 Cathode (+) (Reduction) Ox: Cu(s) Cu^2+(aq) + 2e- Red: Ag^+(aq) + e- Ag(s) x2 Cu(s) + 2Ag(aq) Cu^2+(aq) + 2Ag(s) Cu: Anode oxidized Ag: Cathode reduced E ° (cell) = E ° (cathode) - E ° (anode) = .80V – (.34V) = .46 ∆ G ° = -nFT ; F= 96500 C/mol e- n=2 because there are 2e- transferred ∆ G ° = -(2 mol e-) (96,500 C/mol e-) (+.46V)-89,200 C*V = -89.2 KJ Spontaneous 2. Which of the following metals will react with H+(aq) to produce H2 in a product-favored reaction: Cu,Al,Ag,Fe,Zn? Cu^2+ + 2e- Cu(s) E ° = .34V Al^3+ + 3e- Al(s) E ° = -1.66 V Ag+(aq) + e- Ag(s) E ° = .80V Fe^2+(aq) + 2e- Fe(s) E ° = -.44 V Zn^2+ + 2e- Zn(s) E ° = -.76V 3. A voltaic cell is set up at 253....
View Full Document

{[ snackBarMessage ]}

Page1 / 2

Chem 04-24 - Chemistry 102 1 The standard cell potential E...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online