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What happens when nitric acid is added t...

What happens when nitric acid is added to egg shell ?

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Egg shell contains calcium carbonate as its main constituent. When dipped in concentrated nitric acid, calcium carbonate reacts to evolve carbon dioxide. As a result, egg shell slowly dissolves.
`CaCO_(3)+2HNO_(3)(Con.) to Ca(NO_(3))_(2)+H_(2)O+CO_(2)`
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