Question

a piece of sodium is added to cold water​

Answer 1

Answer:

When sodium comes in contact with water, hydrogen gas is liberated and sodium hydroxide is generated that dissolved in the water. The reaction proceeds as follows: 2Na + 2H2O ==> 2NaOH + H2(gas). The reaction is strongly exothermic, and the heat generated ignites the hydrogen

Answer 2

Sodium is a alkaline, it reacts with water to give an alkaline solution. basically nothing much happens Reaction of sodium with water. Sodium metal reacts rapidly with water to form a colourless solution of sodium hydroxide (NaOH) and hydrogen gas (H2). The resulting solution is basic because of the dissolved hydroxide. The reaction is exothermic.