What happen when nitric acid is added in egg shell?
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Explanation: when nitric acid is added to an egg shell, during reaction, calcium oxide bubbles are formed on the shell which makes it float.
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Egg shell is made of calcium carbonate. We know that when calcium carbonate reacts with nitric acid, it gives carbon dioxide, calcium nitrate and water. Same reaction happens when nitric acid is poured over egg shell.
CaCO3 + 2HNO3 ⇨ Ca(NO3 )2 + CO2 + H2O.
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