Question

Zinc plating (galvanizing) is an important means of corro-

sion protection. Although the process is done customarily by dip-

ping the object into molten zinc, the metal can also be electroplated

from aqueous solutions. How many grams of zinc can be depos-

ited on a steel tank from a ZnSO4 solution when a 0.855-A current

flows for 2.50 days?

Answer 1

$Charge = current × time$

$Charge = 0.855×2.5×24×60×60=184680C$

Moles $= \frac{184680}{9.65×10^4}=1.91mol$

Mass $=1.91×141=269.31g$