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A ALEKS - Advanced E c )' secure! https://www-awhaleks.com/alekscgi/x/1s.exe/10-ung CHEM215 F17-02 | 2 of 2 is a way to coat a complex metal object with a very thin (and hence inexpensive) layer of a precious metal, such as silver or gold. In essence the metal object is made the cathode of an electrolytic cell in which the precious metal cations are dissolved in aqueous solution Suppose a current of 860. mA is passed through an electroplating cell with an aqueous solution of Ag2SO4 in the cathode compartment for 36.0 seconds. Calculate the mass of pure silver deposited on a metal object made into the cathodé of the cell. Round your answer to 3 signiicant digits. Also, be sure your answer contains a unit symbol. . https:/ nce each of Zn2+(aq)+

Explanation / Answer

current = C= 860 mA= 860x10^-3 A= 0.86A

time= 36 .0 seconds

Ag2SO4----------- 2 Ag+ + SO4-2

Valency of Ag= Z=1

Molar mass of Ag= 108 gram/mole , F= farada y= 96500coloumbs

according to faradays laws

W= MCt/ZF

W= 108x0.860x36/1x96500= 0.0346 grams

mass of Ag depositied= 0.0346 grams.

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