12 - Luu (sl24673) H12: Electrochem 1 Mccord (52445) This...

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Luu (sl24673) – H12: Electrochem 1 – Mccord – (52445) 1 This print-out should have 21 questions. Multiple-choice questions may continue on the next column or page – fnd all choices beFore answering. 001 10.0 points Chlorine, bromine, and iodine are good 1. reducing agents. 2. bases. 3. oxidizing agents. 002 10.0 points When the Ag(s) | AgCl(s) | Cl (aq) electrode acts as a cathode, the reaction is 1. Ag + (aq) + e Ag(s). 2. AgCl(s) + e Ag(s) + Cl (aq). 3. Ag(s) + Cl (aq) AgCl(s) + e . 4. 2 AgCl(s) + 2 e 2 Ag + (aq) + Cl 2 (g). 5. Ag(s) Ag + (aq) + e . 003 10.0 points Which metal will dissolve in hydrochloric acid? 1. Ag 2. Au 3. Pt 4. ±e 5. All will dissolve. 004 10.0 points IdentiFy the galvanic cell For the redox re- action between sodium dichromate and mer- cury(I) nitrate in an acidic solution. 1. Hg( ) | Hg 2+ (aq) || H + (aq) , Cr 2 O 2 7 (aq) , Cr 3+ (aq) | Pt(s) 2. Hg( ) | Hg 2+ 2 (aq) || Cr 3+ (aq) | Cr(s) 3. Hg( ) | Hg 2 Cl 2 (s) | Cl (aq) || H + (aq) , Cr 2 O 2 7 (aq) , Cr 3+ (aq) | Pt(s) 4. Pt(s) | Hg 2+ 2 (aq) , Hg 2+ (aq) || H + (aq) , Cr 2 O 2 7 (aq) , Cr 3+ (aq) | Pt(s) 005 10.0 points Copper is plated on zinc by immersing a piece oF zinc into a solution containing copper(II) ions. In the plating reaction, copper(II) ions 1. lose two electrons and are reduced. 2.
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This note was uploaded on 12/17/2010 for the course CH 52445 taught by Professor Mccord during the Fall '10 term at University of Texas at Austin.

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12 - Luu (sl24673) H12: Electrochem 1 Mccord (52445) This...

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