An organic liquid product (boiling point 118∘C118^\circ\text{C}118∘C) is prepared by a reaction in an aqueous mixture. To obtain a pure, dry sample of this organic liquid, three purification processes are carried out: distillation, drying with an anhydrous salt, and separating funnel separation.
Which of the following represents the correct sequence in which these three processes must be carried out?
distillation →\rightarrow→ separating funnel separation →\rightarrow→ drying with an anhydrous salt
drying with an anhydrous salt →\rightarrow→ separating funnel separation →\rightarrow→ distillation
separating funnel separation →\rightarrow→ drying with an anhydrous salt →\rightarrow→ distillation
separating funnel separation →\rightarrow→ distillation →\rightarrow→ drying with an anhydrous salt
107 exam-style questions on Edexcel GCSE Chemistry 3.2 Methods of separating and purifying substances, covering 3.2.1 Pure substances and mixtures, 3.2.2 Techniques for separating mixtures, 3.2.3 Paper chromatography and Rf values, and 3.2.4 Making water potable. Each one has a worked solution and a mark scheme showing where the marks go.