Question

Three isomeric hydrocations `C_(9) H_(12) [(A),(B),(C)]` oxide to `C_(9) H_(6)O_(6) [(D),(E),(F)]` while `(D)` may give three different monoethyl esters, `(E)` may from only two and `(F)` only one. Idenity compounds `(A)` to `(F)`.

Answer 1

`D.U` in `C_99) H_(12) = ((2n_(C) + 2)-n_(H))/(2)`
`= ((2xx9+2)-12)/(2) = 4^(@)`
`4 D.U` suggets that it contains benzene ring. On oxidiation `(A),(B)`, `(C)` give `C_(9) H_(6)O_(6)`, whicvh suggests three `(COOH)` groups. Therefore `(A), (B), (C)` contain three `(Me)` groups whicvh on oxidation give three `(COOH)` groups. The three isomers of `C_(9) H_(12)` are: