MEDIUM
AS and A Level
IMPORTANT
Earn 100
Predict which would be the stronger acid: methanoic acid or ethanoic acid. Explain your reasoning.
Important Questions on Carboxylic Acids and their Derivatives
MEDIUM
AS and A Level
IMPORTANT
Carboxylic acids can be prepared by refluxing a primary alcohol with a strong oxidising agent. Why is methanoic acid never prepared by refluxing methanol with acidified potassium dichromate solution?
MEDIUM
AS and A Level
IMPORTANT
Write two half-equations for the oxidation of ethanedioic acid.
MEDIUM
AS and A Level
IMPORTANT
In titration between ethanedioic acid and potassium manganate(VII) solutions, ethanedioic acid is heated in its conical flask before adding the potassium manganate(VII) solution from the burette. Suggest why.
MEDIUM
AS and A Level
IMPORTANT
In an experiment to standardise a solution of potassium manganate(VII), of a standard solution of ethanedioic acid was fully oxidised by a titre of of potassium manganate(VII) solution. Calculate the concentration of the potassium manganate(VII) solution.
EASY
AS and A Level
IMPORTANT
Write a balanced equation, using structural formulae for the organic compounds, and state any conditions necessary, to show the formation of propanoyl chloride from a suitable carboxylic acid and .
EASY
AS and A Level
IMPORTANT
Write a balanced equation, using structural formulae for the organic compounds, and state any conditions necessary, to show the formation of methanoyl chloride from a suitable carboxylic acid and .
EASY
AS and A Level
IMPORTANT
Write a balanced equation, using structural formulae for the organic compounds, and state any conditions necessary, to show the formation of butanoyl chloride from a suitable carboxylic acid and .
MEDIUM
AS and A Level
IMPORTANT
In its reaction with a nucleophile, explain why an acyl chloride reacts faster than an alcohol.
