How long will it take to produce 2.415 g of Ag metal from its salt solution by passing a current of 3A ? How many miles of electrons are required ? Molar mass of Ag is 107.9 g/ mol.

Mass of substance formed = I.t. (mole ratio ) . M/ 96500
 
Reaction is - Ag+​ ==> Ag + 1e        So, mole ratio = no. of moles of substance formed / no. of electrons emmited = 1

Substituing the values...    2.415 = 3 x t x 1  x 107.9 / 96500
                                           So, t = 0.0081 seconds.
now, q = It = ne
               3 x 0.0081 = n x 1.6 x 10-19
                         n = 0.0152 x 1019 electrons i.e 1.52 x 1019 milli electrons
                                    
  • -10
Wrongly answered
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Answer is 0.02238
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12 mols
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