Suppose the current flowing from a battery is used to electroplate an object wit

Question

Suppose the current flowing from a battery is used to electroplate an object with silver. Calculate the mass of silver that would be deposited by a battery that delivers 1.15 A middot hr of charge. An Ampere is a Coulomb per second. A hr = C/s times hr An A-hr is actually a measure of charge because the hr (once converted to seconds) cancels the time in the denominator, leaving Coulombs. The plating reaction is: Ag^+ (aq) + 1 e^- rightarrow Ag (s) If we know the number of moles of electrons, we know the number of moles of silver. How can we find the number of moles of electrons given the charge?

Explanation / Answer

Ag+ (aq) + e- ----------> Ag(s)

                Z= 1

               hr   = 3600sec

               C   = 1.15A.hr    = 1.15A*3600sec

   W = MCt/ZF

        = 108*1.15*3600/1*96500   = 4.64g >>>>answer

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