What is a carboxylic acid?
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What is a carboxylic acid?
A carboxylic acid is a compound containing the functional group carboxyl, -COOH.
State the general formula for carboxylic acids.
The general formula of a carboxylic acid is CnH2n+1COOH or RCOOH.
True or False?
The naming of a carboxylic acid follows the pattern alkan + oic acid.
True.
The naming of a carboxylic acid follows the pattern alkan + oic acid.
Which carboxylic acid is found in vinegar?
Vinegar is an aqueous solution of ethanoic acid and contains about 5% of the acid by volume.
What is the molecular formula of methanoic acid?
The molecular formula of methanoic acid is HCOOH.
What is the molecular formula of ethanoic acid?
The molecular formula of ethanoic acid is CH3COOH.
What is the molecular formula of propanoic acid?
The molecular formula of propanoic acid is C2H5COOH.
What is the empirical formula of ethanoic acid?
The empirical formula ethanoic acid is CH2O
What is the molecular formula of butanoic acid?
The molecular formula of butanoic acid is C3H7COOH.
True or False?
Carboxylic acids react with metals to form a salt and hydrogen.
True.
Carboxylic acids react with metals to form a salt and hydrogen.
True or False?
Carboxylic acids react with carbonates to form a salt, water and carbon dioxide gas.
True.
Carboxylic acids react with carbonates to form a salt, water and carbon dioxide gas.
What type of reactions of carboxylic acids make a salt and water?
Carboxylic acids take part in neutralisation reactions to produce salt and water.
What is the common name for the acid found in vinegar?
Acetic acid ( known to chemists as ethanoic acid) is the acid used to make vinegar.
Name the type of salts formed salt by carboxylic acids.
Salts formed by the reaction of carboxylic acids are called carboxylates and all end in –anoate.
True or False?
The reaction equation between magnesium and ethanoic acid is:
2CH3COOH + Mg → (CH3COO)2Mg + H2
True.
Carboxylic acids behave like other acids and produce a salt and hydrogen with magnesium:
2CH3COOH + Mg → (CH3COO)2Mg + H2
State the products of the reaction between propanoic acid and potassium hydroxide.
The products of the reaction between propanoic acid and potassium hydroxide are potassium propanoate and water. For reference the equation is:
CH3CH2COOH + KOH → CH3CH2COOK + H2O
State the word equation for this reaction:
2CH3CH2CH2COOH + K2CO3 → 2CH3CH2CH2COOK + H2O + CO2
The word equation for the reaction is:
butanoic acid + potassium carbonate → potassium butanoate + carbon dioxide + water
Define neutralisation reaction.
A neutralisation reaction is a chemical reaction between an acid and a base that produces a salt and water.