4. Carboxylic Acids
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What functional groups do carboxylic acids contain?
General Formula of Carboxylic Acids.
CnH2n+1COOH The value of n is one less than what the prefix indicates!
What is vinegar?
Vinegar is an aqueous solution containing ethanoic acid
Methanoic Acid - Molecular, Displayed and Structural formula.
HCOOH CH2O2
Ethanoic Acid - Molecular, Displayed and Structural formula.
CH3COOH C2H4O2
Propanoic Acid - Molecular, Displayed and Structural formula.
CH3CH2COOH C3H6O2
Butanoic Acid - Molecular, Displayed and Structural formula.
CH3CH2CH2COOH C4H8O2
How do aqueous solutions of carboxylic acids react with metals?
Carboxylic acids react with metals to form a salt and hydrogen gas. The salt formed ends in –anoate.
How do aqueous soltuions of carboxylic acids react with metal carbonates?
Carboxylic acids react with metal carbonates to form a salt, water, and carbon dioxide gas. The salt formed ends in –anoate.
Potassium Carbonate + Butanoic Acid → … Example of Carboxylic Acids reactions with Metal Carbonates.
Potassium Carbonate + Butanoic Acid → Potassium Butanoate + Water + Carbon Dioxide 2CH3CH2CH2COOH + K2CO3 → 2CH3CH2CH2COOK + H2O + CO2
Magnesium + Ethanoic Acid → … Example of Carboxylic Acids reactions with Metal.
Magnesium + Ethanoic Acid → Magnesium Ethanoate + Hydrogen 2CH3COOH + Mg → (CH3COO)2Mg + H2