C11: Alcohols, Carboxylic Acids and Esters
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Alcohols Functional Group
-O-H
Carboxylic Acid Functional Group
-C=O-O-H
Ester Functional Group
-C=O-O (CH)
Ethanol + Oxygen =
Carbon Dioxide + Water
What happens when sodium reacts with alcohols?
> The reaction is similar to that of water, but less vigorous. In ethanol the solution formed is sodium ethoxide. Emits hydrogen.
Ethanol + Oxygen atoms from an oxidising agent =
Ethanoic acid + Water
Difference between strong and weak acids.
Strong acids ionise completely in water. Strong acids therefore have a higher concentration of H+ ions in their solution.
What 3 things are needed to make an ester?
> Alcohol Carboxylic Acid A strong acid catalyst.
Carboxylic Acid + Alcohol =
Ester + Water
Properties of esters
> Volatile Smell distinctive Used in perfumes and food flavourings.