Cambridge International
A2 Level
Chapter 25: Carboxylic
Acids and Acyl Compounds
CIE A2 Chemistry
, CARBOXYLIC ACID
General formula: RCOOH or RCO2H
where R = H, alkyl or aryl groups
(CnH2n+1COOH where n=0,1,2,3…)
Greek prefixes was use and suffix –oic
followed by the word acid
Carbon chain that contains a carboxyl
group (~COOH) at one end of the
structure and the carbon in C=O group
always be C1
CIE A2 Chemistry
, CARBOXYLIC ACID
It is classified according to the R group:
(CH2)16CH3
R: short chain R: long chain
alkyl group R: aryl group alkyl group
Aliphatic acid Aromatic acid Fatty acid
(ethanoic acid) (benzoic acid) (stearic acid)
CIE A2 Chemistry
, Physical properties carboxylic acid
The ~COOH having the shape of trigonal
planar and bent
~120o 106o
The bonds in ~COOH are polar
CIE A2 Chemistry
A2 Level
Chapter 25: Carboxylic
Acids and Acyl Compounds
CIE A2 Chemistry
, CARBOXYLIC ACID
General formula: RCOOH or RCO2H
where R = H, alkyl or aryl groups
(CnH2n+1COOH where n=0,1,2,3…)
Greek prefixes was use and suffix –oic
followed by the word acid
Carbon chain that contains a carboxyl
group (~COOH) at one end of the
structure and the carbon in C=O group
always be C1
CIE A2 Chemistry
, CARBOXYLIC ACID
It is classified according to the R group:
(CH2)16CH3
R: short chain R: long chain
alkyl group R: aryl group alkyl group
Aliphatic acid Aromatic acid Fatty acid
(ethanoic acid) (benzoic acid) (stearic acid)
CIE A2 Chemistry
, Physical properties carboxylic acid
The ~COOH having the shape of trigonal
planar and bent
~120o 106o
The bonds in ~COOH are polar
CIE A2 Chemistry
