Sodium, when added to water, forms hydrogen gas and sodium hydroxide. Sodium reacts with water and gives an explosive reaction. A bright yellow flame is produced in this reaction. This reaction is exothermic and energy giving in nature. Sodium catches fire due to reaction with water. Sodium salts are usually isolated as solids by evaporation or precipitation with an organic antisolvent such as ethanol. Sodium bismuthate (NaBiO 3), is insoluble in cold water and decomposes in hot water (Tassew Arega 2020).