5 6 physical properties
Download
Skip this Video
Download Presentation
5.6 Physical properties

Loading in 2 Seconds...

play fullscreen
1 / 15

5.6 Physical properties - PowerPoint PPT Presentation


  • 98 Views
  • Uploaded on

5.6 Physical properties. Sharp odors (up to C 9 ) Sour taste (citric acid). 5.6 Physical properties (cont.). High b.p. These are the most polar compounds encountered so far. All dioic acids are solids. acetic acid. 5.6 Physical Properties of Carboxylic Acids. Fig. 5.7

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about ' 5.6 Physical properties' - fathi


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
5 6 physical properties
5.6 Physical properties
  • Sharp odors (up to C9)Sour taste (citric acid)
5 6 physical properties cont
5.6 Physical properties (cont.)
  • High b.p
  • These are the most polar compounds encountered so far.All dioic acids are solids.

acetic acid

5 6 physical properties of carboxylic acids
5.6 Physical Properties of Carboxylic Acids
  • Fig. 5.7

The boiling points of mono-carboxylic acids are compared to those of other types of compounds.

carboxylic acids esters and other acid derivatives cont d
Carboxylic Acids, Esters, and Other Acid Derivativescont’d
  • Fig. 5.9

A given carboxylic acid molecule can form two hydrogen bonds to another carboxylic acid molecule, producing a “dimer.”

carboxylic acids esters and other acid derivatives cont d1
Carboxylic Acids, Esters, and Other Acid Derivativescont’d
  • Fig. 5.8

Unbranched mono and dicarboxylic acids at room temperature and pressure.

5 6 physical properties cont1
5.6 Physical properties (cont.)
  • Water soluble (completely up to C4)

acetic acidH2O

carboxylic acids esters and other acid derivatives cont d2
Carboxylic Acids, Esters, and Other Acid Derivativescont’d
  • Fig. 5.10

The solubility in water of saturated unbranched-chain carboxylic acids.

5 7 preparation
5.7 Preparation
  • Primary alcohol oxidation
  • Oxidation of aldehydes
ionization
Ionization
  • Ionization movie
  • Acid, base, conjugate acid, conjugate base
  • Ka and pKa
  • pH and pKa
  • Carboxylic acids are weak acids (Table 5.3)
models of carboxylic acids
Models of carboxylic acids
  • acetic acid
  • acetate ion
  • propanoic acid
  • Propionate
  • oxalic acid
  • pyruvic acid
  • Salicylic acid
if ph pk a then ha a

If pH=pKa then [HA]=[A-]

If pH<pKa then [HA]>[A-]

If pH>pKa then [HA]<[A-]

5 9 carboxylic acid salts
5.9 Carboxylic acid salts
  • Reactions with bases
  • “ate” ions (weak bases)
  • Solubility properties of acids and “ate” ions
  • Reactions of “ate” ions with acids
  • demo
5 9 carboxylic acid salts1
5.9 Carboxylic acid salts

Fig. 5.11 Propionates, salts of propanoic acid, extend the shelf life of bread.

ad