Sample Electrolysis Problems

Sample Electrolysis Problems - Chemistry 208 Spring 200811...

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Unformatted text preview: Chemistry 208 Spring 200811 Sam le Electrol sis Problems Missed b 12:20 Lecture Because of the #% *#! Fire Drill 1. What mass of Clz(g) is formed during the electerolysis of NaCl(aq) by a current of 15.0 amps operating for 2.0 hours? mwdfl ~> “aegis; / z [rm/'3' l! ISM 3 0c) '5' 5 “”95: “if “ u: " amw 7; K b 72% 2“" 70-9-‘W? 66"; ‘6 "‘ mum wmm“ )MW : (1'5")(3600')(2.$Y70.?) j w?— ( 2 ') (a, 453*) (W: 47.4% (IF—2,] 2. A current of 7.50 amps was used for 2.00 hours to electroplate 25.0 grams of hafnium metal (Hf) from an aqueous solution of a hafnium salt. What was the oxidation of the hafnium ion in the solution (Hf'l )? My, MwWAH Him: + @flfiiw .—_ x , If 72M 3mm“ ’ £510 2 (’7 meme—>07“) _7 h (Waswmmm (nXfiMfi’ZJj W VB 3.9? M!” ...
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