Question

give the balanced chemical equations of the reactions on the following conditions​ 1. when calcium carbonate is heated 2. when zince reacts with dil. hydrochloric acid 3. when sodium reacts with water​

Answer 1

Answer:

1)When heated, calcium carbonate decomposes into calcium oxide and carbon dioxide.

CaCO3 --> CaO + CO2

2)Zinc reacts with dilute HCl to form zinc chloride and hydrogen gas.

Zn+2HCl→ ZnCl2 + H2↑

3)When sodium reacts with water sodium hydroxide is formed and hydrogen gas is evolved.

2Na+2H2O→ 2NaOH+ H2

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