(a). `CuSO_4.5H_2Ooverset(100^@)to(A)overset(230^@)to(B)overset(800^@)to(C)+(D)`
(b). `AgNO_3overset(red hot)to(E)+(F)+O_2`

The product (D ) in the following sequence of reaction is CH_(3) COOH overset(NH_(3))(to) (A ) overset( " Heat ")(to) (B ) overset(P_(2)O_(5))(to) ( C ) overset(Na+ C_(2)H_(5) OH) (to) (D )

Identify A to F : Aoverset(LiAlH_(4))(to)C_(2)H_(5)OH overset(PBr_(3))(to)Boverset(KCN)(to)C overset(D)(to)C_(3)H_(7)NH_(2) overset(HNO_(2))(to)E underset(K_(2)Cr_(2)O_(7)//H^(+))overset([O])(to)F

Compare the enol percent. (A ) CH_(3) CHO (B ) CH_(3) - overset(O) overset(||) (C ) - CH_(3) (C ) CH_(3) - overset( O ) overset(||) (C ) - CH_(2) - overset( O ) overset(||) (C )- CH_(3) (D ) CH_(3) - overset(O) overset(||) (C ) - CH_(2) - overset(O) overset(||) (C ) - H (E ) H- overset(O) overset(||) (C ) - CH_(2) - overset( O ) overset(||) (C ) -H ( F) - Ph- overset(O) overset(||) (C) - CH_(2) - overset(O ) overset(||) (C ) - CH_(3) (G ) Ph - overset(O) overset(||) (C ) -CH_(2)- overset(O )overset(||) (C ) - Ph