A current of 3.03 A is passed through a #Pb(NO_3)_2# solution for 1.20 hours. How much lead is plated out of the solution?

1 Answer
May 14, 2016

Answer:

#~~14g#

Explanation:

We know from Faraday;s law of electrolysis the mass of a substance (in g ) deposited at any electrode is given by

#w =(Ect)/F" "# where

  • #E= "equivalent mass of ion "Pb^(2+) ="molar mass"/"valency"=207/2=103.5g/"equivalent "#
  • # c=Current=3.03A#
  • #t =Time=1.2hrs=1.2xx60xx60s=4320s#
  • # F=96500C#
  • #w =(Ect)/F=(103.5xx3.03xx4320)/96500g~~14g#