Molten sodium bromide is electrolysed in an industrial process to produce sodium.

Draw on this

Which is the correct half equation for the production of sodium?

Select one:

• $Na+e^{-}\to {Na}^{+}$
• $Na\to {Na}^{+}+e^{-}$
• ${Na}^{+}+e^{-}\to Na$
• ${Na}^{+}\to Na+e^{-}$

A separator mesh is used to keep the products of the electrolysis apart.

Suggest one reason why the products of the electrolysis must be kept apart.

Which type of particle passes through the separator mesh in the electrolysis of molten sodium bromide?

Choose from: Atom, Electron, Ion, Molecule.

Aqueous sodium bromide solution is electrolysed in a different process. A gas, a halogen, and an alkaline solution are produced.

Which two ions are present in aqueous sodium bromide solution in addition to sodium ions and bromide ions?

Name the alkaline solution produced.

Explain how the alkaline solution is produced. You should refer to the processes at the electrodes.