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

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Question 119 Exercise
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(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?

Answer:

(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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Chapter 1 Chemical Reactions and Equations
Chapter 2 Acids, Bases and Salts
Chapter 3 Metals and Non Metals
Chapter 4 Carbon and its Compounds
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