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How will you separate CO and CO2 from a ...

How will you separate CO and `CO_2` from a mixture?

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When a mixture of `CO_2` and CO is pas s ed through `Cu_2Cl_2` solution acidified with HCl, CO is absorbed in the solution but `CO_2` escapes without participating in any chemical reaction. The solution thus obtained liberates CO on heating.
`2CO + Cu_2Cl_2 + 4H_2O to 2[CuCl.CO.2H_2O]`
`2[CuCl.CO.2H_2O]overset(Delta)to Cu_2Cl_2+ 2COuarr+4H_2O`
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