Identify the reactant and write the balanced equation for the following:

ICSE Class 10 Chemistry PYQ · 2025 Specimen · Section B

3(i)Written · 2025 · Section B · 2025 Specimen · 🔁 also 2024

Identify the reactant and write the balanced equation for the following:

Nitric acid reacts with compound Q to give a salt Ca(NO3)2, water and carbon dioxide.

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The compound 'Q' in this reaction is calcium carbonate or calcium bicarbonate.

When nitric acid reacts with calcium carbonate, it produces calcium nitrate, water and carbon dioxide.

CaCO3 + 2HNO3 ⟶ Ca(NO3)2 + H2O + CO2

OR

Ca(HCO3)2 + 2HNO3 ⟶ Ca(NO3)2 + 2H2O + CO2

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