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What are the various methods by which carbon-di-oxide is prepared? |
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Answer» Solution :(i) Carbon monoxide can be prepared by the reaction of carbon with limited amount of oxygen. `2C+O_(2) to 2CO` (ii) (a) On industrial scale carbon monoxide is produced by the reaction of carbon with AIR. (b) The carbon monoxide formed will contain nitrogen gas also and the mixture of mitrogen and carbon monoxide is called producer gas. (c) `2C+O_(2)//N_(2)("air")to underset("Producers Gas")(2CO+N_(2))` (d) The producer gas is then passed through a solution of COPPER (I) chloride under pressure which results in the formation of `CuCl(CO).2H_(2)O`. (e) At reduced pressures this solution RELEASES the pure carbon monoxide. (iii) Pure carbon monoxide is prepared by warming methanoic ACID with concentrated sulphuric acid which acts as a dehydrating AGENT. `HCOOH+H_(2)SO_(4) to CO+H_(2)O+H_(2)SO_(4)` |
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