What will be the reaction when (i) sodium metal is dropped in water? (ii) sodium metal is heated in the free supply of air?

(i) Sodium reacts with water to give sodium hydroxide and dihydrogen which is a voilent reaction

2Na + 2H2O –> 2NaOH + H2

This is an exothermic reaction

(ii) Sodium when heated in supply of air

2Na + O2 –> Na2O2 (Sodium peroxide)

Sodium does not react easily with oxygen once it starts it get violent the piece of sodium explodes

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