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CO gets absorbed by ammoniacal cuprous c...

CO gets absorbed by ammoniacal cuprous chloride to form a complex but `CO_2` does not.

Text Solution

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Carbon monoxide acts as a Lewis base due to presence of lone pair of electrons on carbon `Coverset(larr)=O:` and forms soluble complex with ammoniacal cuprous chloride (CuCl).
`CuCl + NH_3 + CO to [Cu(CO)NH_3]^(+)Cl^(-)`
On the other hand, carbon dioxide `(underset(* *)overset(* *)O=C=underset(* *)overset(* *)O)`does not have a lone pair of elecu·ons on carbon and cannot form complexes.
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