An organtiic compound (A) contains C = 92.3% and H = 7.7% Its vapour density has been found to be 52.(A) is oxidised by KMnO_(4) soltuion in cold and when fullyoxidisedgives an acid (B)which containsC = 68.8%and H = 4.9% (A) reacts with bromicand yields a comnpound (C) containing60.8%bromine. What is the structer of (A) ?

An organtiic compound (A) contains C = 92.3% and H = 7.7% Its vapour d

1.	An organtiic compound (A) contains C = 92.3% and H = 7.7% Its vapour density has been found to be 52.(A) is oxidised by KMnO_(4) soltuion in cold and when fullyoxidisedgives an acid (B)which containsC = 68.8%and H = 4.9% (A) reacts with bromicand yields a comnpound (C) containing60.8%bromine. What is the structer of (A) ?
Answer» Solution : Emprical formula `= CH` MOLECULAR mass `= 2xx VD = 104` Empirical formula mass `= 13` `n = (104)/(13) = 8` Molecular formulaof `(A) = C_(8) H_(8)` `D.U` in `(A) = 5^(@)`and `(C:H = 1:1)` `(A)` contains benzene RING withone `(C=C)` in the side chain. `(A)` is `Ph -CH = CH_(2)` (Styrene) Reaction: Molecular formula of `(B)` Molecular formula of`(B) = C_(7) H_(6)O_(2)`