1.

Complete the missing lnks (X), (Y) and (Z)by making an appropriate choice. CH_(3)COOH overset(PBr_(3)//Br_(2))toXoverset(KCN)toYoverset(H_(3)O^(+))toZ

Answer»

`{:("X","Y","Z"),(CH_(3)COBr,CH_(3)COCN,CH_(3)COOH):}`
`{:("X","Y","Z"),(BrCH_(2)COOH,UNDERSET(CN)underset(|)CH_(2)COOH,HOOC-CH_(2)COOH):}`
`{:("X","Y","Z"),(BrCH_(2)COOH,CH_(2)(CN)COOH,overset("COOH")underset("COOH")("|")):}`
`{:("X","Y","Z"),(Br_(2)CHCOOH,Br_(2)C(CN)COOH,CH_(3)CH_(2)COOH):}`

Solution :`underset(""underset((Z))(HOOC-CH_(2)COOH)overset(H_(3)O^(+))larrunderset((Y))underset(CN)underset(|)(CH_(2))COOH)(CH_(3)COOHoverset(PBr_(3)//Br_(2))toBr-underset((X))(CH_(2))underset(DARR overset(" ")underset(" ")KCN)(COOH))`


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