(a)
Interpretation:
The electrode at which magnesium is produced on
(a)
Explanation of Solution
Magnesium chloride undergoes electrolysis to form magnesium metal and chlorine gas. This can be shown as given below,
Magnesium is a metal and hence magnesium cation is produced on electrolysis. This magnesium cation gets oxidized at the cathode resulting in the formation of magnesium metal.
(b)
Interpretation:
On the anode the substance that is produced on electrolysis of molten
(b)
Explanation of Solution
Magnesium chloride undergoes electrolysis to form magnesium metal and chlorine gas. This can be shown as given below,
Magnesium is a metal and hence magnesium cation is produced on electrolysis. Chloride ion is produced in the melt and chlorine gas is liberated at the anode.
(c)
Interpretation:
Amount of electrons that is used in electrolysis of
(c)
Explanation of Solution
Magnesium chloride undergoes electrolysis to form magnesium metal and chlorine gas. This can be shown as given below,
For each mol of
Number of mol of electrons that is required is
(d)
Interpretation:
Energy required per mole of magnesium has to be calculated if
(d)
Explanation of Solution
Magnesium chloride undergoes electrolysis to form magnesium metal and chlorine gas. This can be shown as given below,
Conversion factors can be used to find the amount of energy required per mole of magnesium. This can be done as shown below,
Therefore, the energy required for per mole of magnesium is
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Chapter 19 Solutions
EBK CHEMISTRY: THE MOLECULAR SCIENCE
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