4. Consider the electrolysis of CaCl2(l). How many grams of Ca (s) can be produced by passing 0.5 A
for 30 minutes?
5. How many faradays of electricity ( or moles of electrons) are required to produce:
(a) 0.84 dm3 of oxygen gas from hydrogen sulfate (aq)
(b) 1.50 dm3 of chlorine gas from NaCl (l)
(c) 6.0 g of tin from molten SnCl2.
6. How many hours would it take to produce 25.0 g of Cr from a solution of CrCl3 by a current of 2.75 A?
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