Lakhmir Singh Solutions Class 10 Chemistry Solutions for Exercise in Chapter 2 - Chapter 2 Acids, Bases and Salts

Question 119 Exercise

(a) What happens when zinc granules are heated with sodium hydroxide solution? Write equation of the reaction which takes place.

(b) What happens when bases react with non-metal oxides? Explain with the help of an example. What does this reaction tell us about the nature of non-metal oxides?


(a)  When zinc granules are heated with sodium hydroxide solution, hydrogen gas is formed with sodium zincate salt.

Zn(s) + 2NaOH(aq) → Na2ZnO2(aq) + H2(g)

(b) When the base reacts with oxides, salt and water are formed.

Ca(OH)2 + CO2 → CaCO3 + H2O

This reaction shows that non-metal oxides are acidic in nature.

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