Electrochemistry?

Update: (a) Calculate the mass of Li formed by electrolysis of molten LiCl by a current of 7.5x10^4 A for a period of 24 hours. Assume the electrolytic cell is 85% efficient. (b) what is the minimum voltage needed to cause the electrolysis? I know how to work part a. The answer is 4.0x10^5, I believe. I am super... show more (a) Calculate the mass of Li formed by electrolysis of molten LiCl by a current of 7.5x10^4 A for a period of 24 hours. Assume the electrolytic cell is 85% efficient.

(b) what is the minimum voltage needed to cause the electrolysis?

I know how to work part a. The answer is 4.0x10^5, I believe.

I am super confused on part b.

Any help would be appreciated!
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