Molten magnesium bromide was electrolyzed using graphite electrodes. a) Explain why solid magnesium bromide does not conduct electricity but conducts when in molten state. ( 2 marks) b) Give the formulas of two ions, including their charges, present in molten magnesium bromide. ( 2 marks) c) Write an equation for the reaction at the cathode. ( 2 marks) d) Is the reaction at the cathode oxidation or reduction? Give a reason for your answer. ( 2 marks)

Molten magnesium bromide was electrolyzed using graphite electrodes.

1.	Molten magnesium bromide was electrolyzed using graphite electrodes. a) Explain why solid magnesium bromide does not conduct electricity but conducts when in molten state. ( 2 marks) b) Give the formulas of two ions, including their charges, present in molten magnesium bromide. ( 2 marks) c) Write an equation for the reaction at the cathode. ( 2 marks) d) Is the reaction at the cathode oxidation or reduction? Give a reason for your answer. ( 2 marks)
Answer» a) because it is an IONIC solidb)Mg2+ and Br2-c)Mg²^+ + 2e- ------> MGD) REACTION in cathode is always oxidation because ELECTRONS from current source PASSES only through cathode to get oxidation of products