Carboxylic Acids Flashcards
What is the functional group of Carboxylic Acids?
O
-COOH //
-C
\
O-HHow do you change the names for Carboxylic Acids?
End in ‘-anoic acid’
What is the formula for methanoic acid?
HCOOH
Which Carboxylic Acid is this? CH₃COOH
Ethanoic acid
What is the formula for propanoic acid?
C₂H₅COOH
Carboxylic Acids react just like any other acid with [ ] to produce carbon dioxide. The salts formed in these reactions end in [ ]
Carbonates
‘-anoate’
Ethanoic acid + Sodium Carbonate ->
Carbon dioxide + sodium ethanoate
The strength of an acid isn’t the same as it’s concentration. Concentration is [ ] and strength is [ ]
How watered down your acid is
How well it has ionised in water
Describe what happens when Carboxylic Acids dissolve in water
They produce Acidic solutions. When they dissolve, they ionise and release H⁺ ions which are responsible for making the solution acidic
But, because they don’t ionise completely they form weak acidic solutions = higher pH than aqueous solutions of strong acids with the same concentration
What does ‘ because they don’t ionise completely ‘ mean?
Not many H⁺ ions are released
Ethanoic acid can be made by [ ]. Microbes like [ ] cause the ethanol to [ ]. Ethanol can also be oxidised using [ ]
Oxidising ethanol
yeast
ferment
Oxidising agents.
What is the equation for oxidising ethanol?
Ethanol + Oxygen -> Ethanoic acid + Water
How is vinegar made? What’s it used for?
Ethanoic acid can be dissolved in water to make vinegar. Used for flavouring and preserving foods
[ ] (another Carboxylic Acid) is present in oranges and lemons, and is manufactured in large quantities to make [ ]. It’s also used to get rid of [ ].
Citric acid
fizzy drinks
scale
What are kind of Carboxylic Acids are used to make soaps and detergents?
Carboxylic Acids with longer chains of carbon atoms
