Reactions and their catalysts

Question 0

Reagents and conditions of halogenation of benzene?

Answer 0

Halogen carrier e.g. AlCl3 catalyst, Cl2, room temp, in the dark

Question 1

What are the reagents and conditions for the nitration of benzene?

Answer 1

Conc nitric acid, conc sulphuric acid, 50*degrees

Question 2

Oxidation of alcohols?

Answer 2

K2Cr2O7/H+ acid catalyst

Question 3

Reduction of aldehydes and ketones

Answer 3

NaBH4 in water

Question 4

Esterification?

Answer 4

Carboxylate acid+water===>ester+ water H2SO4 catalyst

Question 5

Ester hydrolysis?

Acid

Answer 5

HCl heated under reflux +water

Question 6

Ester hydrolysis?

Alkaline A?

Answer 6

NaOH heated under reflux

Question 7

Preparation of primary aliphatic amine?

Answer 7

Warm halogenoalkanes with excess ammonia using ethanol.
CH3CH2Cl+NH3=====>CH3CH2CH2NH2 +HCl
NH3+HCl=====>NH4+Cl~

Question 8

Preparing aromatic amines?

Answer 8

Nitrobenzene scan be reduced.

Tin,conc HCl,heated under reflux, followed by neutralisation of excess HCl

Question 9

Industrial production of dyestuff?

Answer 9

NaNO2 + HCl====>HNO2 +NaCl

Phenyl amine + HNO2 +HCl below 10*degrees