Problem: Magnesium is obtained by electrolysis of molten MgCl2.Several cells are connected in parallel by very large copper buses that convey current to the cells. Assuming that the cells are 96 % efficient in producing the desired products in electrolysis, what mass of Mg is formed by passing a current of 9.5×104 A for a period of 26 hr?

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FREE Expert Solution

We have to determine what mass of magnesium is formed by electrolysis when a current of 9.5×104 A for a period of 26 hours.


We will follow these steps to solve this problem:

Step 1: Write an equation for the reduction of MgCl2 to Mg metal.

Step 2: Determine the current passed through the cells at 96 % efficiency.

Step 3: Determine the amount of electric charge passed through the cells.

Step 4: Calculate the amount of Mg metal formed.


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Problem Details

Magnesium is obtained by electrolysis of molten MgCl2.

Several cells are connected in parallel by very large copper buses that convey current to the cells. Assuming that the cells are 96 % efficient in producing the desired products in electrolysis, what mass of Mg is formed by passing a current of 9.5×104 A for a period of 26 hr?