Carboxylic Acids

Question 1

Naming
What do they end in?
What if there is two?
What if it is attached to benzene?

Answer 1

Oic acid
Dioc acid
Benzoic acid,benzene carboxylic acid

Question 2

Physical properties
What are they at room temp?
What is there boiling point compared to alkanes?why?
What are they very soluble up to? Why?
What reduced their physical properties?

Answer 2

Solids or liquids
Higher bc of hbonds
Butanoic acid bc hbonds form with water
Carbon chain length and attachment of benzene

Question 3

Acidity
  Why are they weak acids?
  What does carbonyl compound attract away from alcohol? What does this do to the OH?
  What do they release a H+ to form?
  Diagram equation 
  Example with CH3COOH
  Does it go to completion?
  Does the OH break easily in alcohols?
  What is the charge on carboxylate anion delocalised between? What is the charge on the oxygen as a result? So what is it less likely to gain?

Answer 3

Only slightly dissociate in water
Electron density, weakens it 
Stable carboxylate ion 
CH3COOH>CH3COO- + H+
No 
No
2 oxygen 
Halved
Proton

Question 4

Carboxylic acids acting as acids
What does an acid+base =?
What does an acid+metal=?
What does an acid+carbonate=?
What does an acid+hydrogen carbonate=?
What is acid+hydrogen carbonate=?what is this used as a test for?

Answer 4

Salt and water
Salt and hydrogen
Salt and CO2 and H2
Salt and Water and CO2
Carboxylic acids

Question 5

What’s the functional group? Ways of representing?
Why are they different from aldehydes,ketones and alcohols?
How are they prepared? With what reagent?

Answer 5

COOH,CO2H
Carbonyl and hydroxy
Oxidation of primary alcohols and aldehydes with K2Cr2O7