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प्रश्न
On heating calcium carbonate gets converted into calcium oxide and carbon dioxide.
(a) Is this a physical or a chemical change?
(b) Can you prepare one acidic and one basic solution by using the products formed in the above process? If so, write the chemical equation involved.
उत्तर
(a) It is a chemical change in which new substances are formed.
(b) Calcium oxide when dissolved in water, forms a basic solution.
\[\ce{CaO + H2O -> (OH)2}\]
Carbon dioxide when dissolved in water, forms an acidic solution
\[\ce{CO2 + H2O -> H2CO3}\]
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