Question

Question 10.28 Write balanced equations for reactions between

(a) Na2O2and water

(b) KO2 and water

(c) Na2O and CO2

Class XI The s-Block Elements Page 306

Answer 1

(a) Na2O2 and water,
When Na2O2 reacts with water sodium hydroxide and Hydrogen peroxide are formed.
e.g., Na2O2 + 2H2O ---> 2NaOH + H2O2


(b) KO2 and water,
when KO2 reacts with water potassium hydroxide , hydrogen peroxide and oxygen gas are formed.
e.g., 2KO2 + 2H2O --->2KOH + H2O2 + O2

(c) Na2O and CO2,
when Na2O2 reacts with CO2 sodium carbonate is formed.
e.g., Na2O + CO2 ---> Na2CO3