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Write balanced chemical equations for th...

Write balanced chemical equations for the following statements :
(i) Excess of carbon dioxide gas is passed through lime water .
(ii) Dilute sulphuric acid reacts with sodium carbonate .
(iii) Egg shells are dropped in hydrochloric acid
(iv) Copper (II) oxide reacts with dilute hydrochloric acid.

Text Solution

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(i) `Ca(OH)_(2)(aq)+CO_(2)(g)rarrCaCO_(3)(S)+H_(2)O(l)`
`CaCO_(3)(S)+H_(2)O(l)+CO_(2)(g)rarrCa(HCO_(3))_(2)(aq)`
(ii) `Na_(2)CO_(3)+H_(2)SO_(4)(dil)rarrNA_(2)SO_(4)(aq)+H_(2)O(l)+CO_(2)(g)`
(iii) `CaCO_(3)+2HClrarrCaCl_(2)+H_(2)O+CO_(2)`
(iv) `CuO+2HCl(dil)rarrCuCl_(2)+H_(2)O`
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