Ethanoic acid, $\text{CH}_3\text{CO}_2\text{H}$, and trichloroethanoic acid, $\text{CCl}_3\text{CO}_2\text{H}$, are both carboxylic acids. Ethanoic acid may be used to prepare ethanamide, $\text{CH}_3\text{CONH}_2$. Put these three compounds in order from least acidic to most acidic. Explain your answer.
State which, if any, of ethanoic acid, methanoic acid and ethanedioic acid reacts with Fehling’s reagent.
State which, if any, of ethanoic acid, methanoic acid and ethanedioic acid react with warm acidified manganate(VII) ions.
Compound $A$ contains chlorine. Give the structural formula and the name of $A$.
Suggest suitable reagents for steps 1 and 2 in the synthesis. step 1 step 2
Explain why $\text{CDCl}_3$ is used as a solvent instead of $\text{CHCl}_3$.
Complete the diagram by adding the chemical shifts, $\delta$, for the labelled protons in the $\text{CH}_3\text{CONHC}_2\text{H}_5$ molecule.
State and explain how the proton NMR spectrum of the amide $\text{CH}_3\text{CONHC}_2\text{H}_5$ changes when it is dissolved in $\text{D}_2\text{O}$ instead of $\text{CDCl}_3$.
The mass spectrum of the amide $\text{CH}_3\text{CONHC}_2\text{H}_5$ shows a fragment ion at $m/e$ 58. Give the molecular formula of this fragment ion.
Identify reagent $B$.
State the number of separate absorptions in the carbon-13 NMR spectrum of diethylamine.