Chemistry 0620 · IGCSE · Formulae, functional groups and terminology

Formulae, functional groups and terminology — practice question

A carboxylic acid Y is shown with the structure below. H-C(=O)-O-H
(a)[1]

State the general formula for carboxylic acids.

(b)[1]

Name carboxylic acid Y.

(c)[1]

Write down the molecular formula for carboxylic acid Y.

(d)[3]

Complete the dot-and-cross diagram to show how the electrons are arranged in a molecule of carboxylic acid Y.

(e(i))[3]

Name ester Z and draw its structure. Include every atom and every bond.

(e(ii))[1]

Name the other product made when carboxylic acid Y reacts with propan-1-ol.

(e(iii))[2]

Name: • an ester that is a structural isomer of ester Z • a carboxylic acid that is a structural isomer of ester Z

Worked solution & mark scheme

This 12-mark question has a full step-by-step worked solution and mark scheme. One marking point: CnH2n+1COOH

  • Full mark scheme, point by point
  • Step-by-step worked solution
  • Write your answer & get it marked instantly by AI