How many amps are required to produce 725 g of potassium met

How many amps are required to produce 72.5 g of potassium metal from a sample of molten potassium chloride in 7.63 hours?

Solution

72.5g=72.5/39=1.86mol

1mole=96500coloumb

s0 1.86*96500=179391c

i=179391/(7.63*3600)=6.5ampere