Sodium combines with water to produce an aqueous solution of sodium hydroxide and copious amounts of hydrogen gas, in a violently exothermic fashion.

The ions present when sodium chloride dissolves in water are: sodium ions, chloride ions, hydrogen ions and hydroxide ions. There are various different ways of carrying out electrolysis.

Dilute sodium hydroxide solution is used in tests for some metal ions close ion Electrically charged particle, formed when an atom or molecule gains or loses electrons., which form metal ...