Chemistry 5070 · O Level · Formulae, functional groups and terminology
Formulae, functional groups and terminology — practice question
Esters serve as food flavourings and as solvents.
(a)[1]
Draw the structure of ethyl methanoate, making sure that all atoms and all bonds are shown.
(b(i))[1]
What does the term evaporation mean?
(b(ii))[2]
Explain, in terms of kinetic particle theory, why the rate of evaporation decreases as a result.
(b(iii))[2]
Which ester has the slowest evaporation rate at room temperature and pressure? Explain your answer.
Worked solution & mark scheme
This 6-mark question has a full step-by-step worked solution and mark scheme. One marking point: “The displayed formula is correct, as illustrated above.” …