The third cell contained an electrolyte of a trivalent ion, X+3. The cathode in this cell was weighed before and after the formation of the hydrogen gas. It was found that 0.06287 g of X had formed.
a. Calculate the equivalent mass of X
b. Considering the most common charges of metal ions and the probability of small errors, what is a likely identity of metal X? Justify your answer!
c. How long will it take to form this much hydrogen (and copper and X) if a meter, connected in series with the cells, shows a constant reading of 0.250 amps?