Deepak spilled some concentrated nitric acid accidentally in the laboratory. To neutralize it, he sprinkled sodium carbonate powder on it.

ICSE Class 10 Chemistry PYQ · 2026 Improvement · Section B

6(ii)Written · 2026 · Section B · 2026 Improvement

Deepak spilled some concentrated nitric acid accidentally in the laboratory. To neutralize it, he sprinkled sodium carbonate powder on it.

(a) Write the equation for the reaction that took place when he sprinkled sodium carbonate on nitric acid.

(b) Name the gas evolved in the reaction above.

(c) Write the equation for the reaction that would take place if Deepak had sprinkled carbon over concentrated nitric acid.

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(a) Na2CO3 + 2HNO3 ⟶ 2NaNO3 + H2O + CO2

(b) Carbon dioxide (CO2)

(c) C + 4HNO3 [conc.] ⟶ CO2 + 2H2O + 4NO2

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