Step 1:

The current in the electrolysis of magnesium chloride is 60.0 A.

The time taken for the electrolysis of magnesium chloride is  Sec.

Half-reaction for formation of magnesium chloride : .

Charge of the magnesium ion is

Convert charge into Moles per electron :

Step 2:

Now convert amount of substance in moles.

Find out the Molecular weight.

Amount of magnesium is 302.23 g. \ \

Solution: \ \

Amount of magnesium is 302.23 g. \ \

Step 1:

(b)

The current in the electrolysis of magnesium chloride is 100.0 A.

The weight of the magnesium chloride is 50.0 g

Half-reaction for formation of magnesium chloride : .

Find out the amount of the magnesium chloride in moles.

Molecular weight of the magnesium chloride is 95.211 g/mol.

Total amount of magnesium chloride for 2 electrons.

Charge of the substance :

The current in the electrolysis of magnesium chloride:

The time taken for the electrolysis of magnesium chloride is  Sec.

Solution: \ \

The time taken for the electrolysis of magnesium chloride is  Sec.