write the chemical reaction of metal carbonated with acid . what happens on passing this gas evolved above over lime water? write the chemical equation for it .

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Solution

Ethanoic acid reacts with sodium carbonate to produce sodium ethonoate, water and carbon dioxide.

2CH₃COOH + Na₂CO₃ → 2CH₃COONa + H₂O + CO₂

When passed in small amount, carbon dioxide reacts with lime water [Ca(OH)₂] to form calcium carbonate, which is a white precipitate and water.

Ca(OH)₂ + CO₂ -------------> CaCO₃ + H₂O

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