Chemistry
Wolverton445
2017-08-15 02:56:45
Calcium metal is obtained by direct electrolysis of molten cacl2. if a metallurgical electrolysis apparatus operates at 28.70 a, how many grams of calcium metal will be produced in 12 hours?
ANSWERS
Mins963
2017-08-15 05:07:43

There is 1 mole of electrons = 96500C and Ca = 40  Ca2+  + 2e --->Ca Base on the formula above it means that there are 2 moles of electrons to produce 1 mole of calcium. 96500C x 2 = 193000C 193000C electricity produce 40g Calcium Coulombs = Amps x seconds   (28.70A for 12 hours) = 28.70A x 12 x 60 x 60 C = 1 239 840 C This amount of electricity will produce  =1239840 / 193000 x 40g Calcium = 6.42 x 40 g Calcium = 256.96 g So there will be 256.96g of Calcium metal that will be produced in 12 hours. 

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