Wednesday
July 30, 2014

Homework Help: Chemistry Check

Posted by Anonymous on Wednesday, March 5, 2008 at 6:33pm.

Write chemical equations to represent the cathode, anode, and net cell reactions.

1) Cd | Cd(NO3)2 || Ag(NO3)2 | Ag

Reduction at Cathode: Cd2+ + 2e- ---> Cd
Oxidation at Anode: [Ag ---> Ag+ + e-] x2

Cd2+ + 2Ag ---> Cd + 2Ag2+

2) Pt | IO3-,H+ || Zn2+ | Zn

Reduction at Cathode: 2IO3- + 12H+ + 10e- ---> I2 + 6H2O
Oxidation at Anode: [Zn ---> Zn2+ + 2e-] x 5

2IO3- + 12H+ + Zn ---> I2 + 6H2O + Zn2+

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