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Classification of Alcohols

48.when a com...

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48.when a compound Z reacts with Pcl5 gives X which further react with alc.koh to give Y which react with conc.H2SO4+h2o+boil to give compound Z again.Then find Z. 1)propanol 2)propan-2-ol 3)1-ethyl propanol 4)propene

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Q.
Primary alkyl halide

C_{4} H_{9} B r

(X) reacts with alc.

K O H

to give compound (Y). Compound (Y) reacts with

H B r

to give compound (Z) which is an isomer of (X). When (X) react with Na metal it gives compound (P).

Hence compound (X), (Y), (Z) and (P) respectively are :

Q. An organic compound

(X)

with molecular formula

C_{3} H_{6} O

is not readily oxidised. On reduction, it gives

C_{3} H_{8} O

(Y)

which react with

H B r

to give a bromide

(Z)

which is converted to Grignard's reagent. Grignard's reagent reacts with

(X)

to give 2, 3-dimethylbutan-2-ol.

(X), (Y)

(Z)

respectively are:

(x)

on treatment with

N a

(y)

P C l_{5}

(z)

(y)

(z)

react together to form diethyl ether.

(x), (y)

(z)

respectively are:

Q. Compound (X) containing chlorine on treatment with strong ammonia gives a solid Y which is free from chlorine. (Y) analysed as: (C) = 49.31 %, H = 9.59%, and N = 19.18% and reacts with

B r_{2}

and caustic soda to give a basic compound (Z). (Z) reacts with

{H N O}_{2}

to give ethanol. Suggest structures for (X), (Y), and (Z).

Q. A compound X decolourises

B r_{2}

water and reacts slowly with conc.

H_{2} S O_{4}

to give an addition product. X reacts with HBr to form Y.Y reacts with NaOH to form, Z, On oxidation Z gives hexan-3-one. X,Y and Z in the reactions are :

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