11th Class Chemistry The p-Block Elements-I

  • question_answer 40) Give one method for industrial preparation and one for laboratory preparation of CO and \[C{{O}_{2}}\] each.

    Answer:

    CO Industrial:\[2C+{{O}_{2}}\xrightarrow[air]{Limited}2CO\] Laboratory: By action of conc. \[{{H}_{2}}S{{O}_{4}}\]on potassium ferrocyanide. \[{{K}_{4}}Fe{{(CN)}_{6}}+6{{H}_{2}}S{{O}_{4}}+6{{H}_{2}}O\to \]\[2{{K}_{2}}S{{O}_{4}}+FeS{{O}_{4}}+3{{(N{{H}_{4}})}_{2}}S{{O}_{4}}+6CO\] or By dehydration of formic acid. \[HCOOH\xrightarrow{Conc,{{H}_{2}}S{{O}_{4}}}CO+{{H}_{2}}O\] \[C{{O}_{2}}\] Industrial:\[C+{{O}_{2}}\xrightarrow{Excess}C{{O}_{2}}\] Laboratory: By action of dilute \[HCl\] on marble chips. \[CaC{{O}_{3}}+2HCl\to CaC{{l}_{2}}+{{H}_{2}}O+C{{O}_{2}}\]  


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