1.

Explain the methods to prepare carbon dioxide.

Answer»

Solution :(i) On industrial scale it is produced by burning coke in excess of air.
`underset(("coke"))(C)+O_(2)toCO_(2)`
(ii) CALCINATION of lime PRODUCES carbon dioxide as by product.
`CaCO_(3)overset(DELTA)(to)CaO+CO_(2)`
(III) Carbon dioxide is prepared in laboratory by the aciton of dilute hydrochloric acid on metal carbonates.
`CaCO_(3)+2HCl to CaCl_(2)+H_(2)O+CO_(2)`


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