A brass strip of dimensions 4 cm and 6 cm has to be coated with a silver layer of 2 min thickness. Calculate the amount of charge required for the deposition of silver and the amount of magnesium deposition in another electrolytic cell when same amount of charge is passed (density of Ag = 10.5 g/cc)

A brass strip of dimensions 4 cm and 6 cm has to be coated with a silv

1.	A brass strip of dimensions 4 cm and 6 cm has to be coated with a silver layer of 2 min thickness. Calculate the amount of charge required for the deposition of silver and the amount of magnesium deposition in another electrolytic cell when same amount of charge is passed (density of Ag = 10.5 g/cc)
Answer» Solution :DENSITY of Ag = 10.5 g//cc Mass of silver REQUIRED for coating brass spoon `= 10.5 xx 4 xx 0.2 xx 6= 50.4 g` 108 g of Ag requires 1 FARADAY of charge. Therefore, 50.4 g of Ag require ------ ? `= (50.4)/(108) = 0.466` faradays 1 faraday of charge DEPOSITE 12 g of Mg. Therefore, 0.466 faraday charge deposite ? `= 0.466 xx 12 = 5.6 g`