carboxylic acids

Question 1

what occurs with lone pairs of oxygen

Answer 1

resonance

Question 2

Pka

Answer 2

5

Question 3

what increases acidity

Answer 3

electron withdrawing substituents

Question 4

Carbonation of grignard’s reagent produces an addition product called

Answer 4

Carboxylic

Question 5

Carboxylic acids are also produced by

Answer 5

1. hydrolysis of nitriles
2. Oxidation of primary alcohols
3. Oxidation of aldehydes
4. Oxidation of Alkyl benzene
5. Hydrolysis of esters
6. Oxidative cleavage of alkenes

Question 6

Reagents for hydrolysis of nitriles

Answer 6

Boiling with mineral acid or alkali

Question 7

Reagents for . Oxidation of primary alcohols

Answer 7

acidified dichromate

Question 8

Oxidation of Alkyl benzene

Answer 8

Alkaline manganate/ Acidified dichromate/ Dilute nitric acid

Question 9

Hydrolysis of esters

Answer 9

conc. NaOH

Question 10

Oxidative cleavage of alkenes

Answer 10

alkaline manganate

Question 11

Colourless and has pungent smell

Answer 11

C1C2C3

Question 12

Liquids with unpleasant smell

Answer 12

C4 onwards

Question 13

Solubility

Answer 13

1st four soluble in water

Question 14

Due to H2 bonding Carboxylic acids form

Answer 14

cyclic dimers

Question 15

melting point

Answer 15

even C atoms are higher

Question 16

Reactions involving H group

Answer 16

1. Reactions with base
Form salt
2.Carbonates and bicarbonates
Carbon dioxide with efferesence
3.Reactions with metals
Salts with H2 gas

Question 17

reactions involving OH group

Answer 17

1. Reactions with PCl5 and SOCl2 in the presence of pyridine base
   Form acyl chlorides
   POCl3 and SO2 HCl
   2.Formation of ester
   Conc. Sulfuric acid
   3.Formation of amide
   React with ammonia
   Ammonia salt heated produce acid amides
   4.Formation of acid anhydride
   Dehydrated on heating strongly
   With P2O5

Question 18

Reactions involving carbonyl group

Answer 18

1. Partial reduction to alcohol
   LiAlH4
   2.Complete reduction to alkanes
   HI and red phosphorous

Question 19

Dilute solution of acetic acid

Answer 19

vinegar

Question 20

Banana

Answer 20

amylacetate

Question 21

Raspberry

Answer 21

Isobutyl formate

Question 22

Jasmine

Answer 22

Benzyl acetate

Question 23

Pineapple

Answer 23

Ethyl butyrate

Question 24

Apricot

Answer 24

Amyl butyrate

Question 25

orange

Answer 25

Octyl Acetate

Question 26

Boiling point of acetic acid

Answer 26

118C

Question 27

Glacial acetic acid when frozen at

Answer 27

17C

Question 28

Uses of acetic acid

Answer 28

1. Coagulant
2. Silk
3. Plastics
4. Rayon