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2.1 Purity and separating mixtures

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Question 10
F

A student uses simple distillation to collect pure water from salt solution.

Which option shows the correct position of the thermometer bulb and the thermometer reading while the water is being collected?

[1]
A

In the salt solution, with the reading rising steadily above 100 ∘C100\,^\circ\mathrm{C}100∘C

B

At the entrance to the side arm, with the reading steady at 100 ∘C100\,^\circ\mathrm{C}100∘C

C

In the collecting beaker, with the reading steady at 100 ∘C100\,^\circ\mathrm{C}100∘C

D

At the entrance to the side arm, with the reading rising steadily above 100 ∘C100\,^\circ\mathrm{C}100∘C

Markscheme

2.1 Purity and separating mixtures Questions

  1. GCSE
  2. /Chemistry
  3. /2.1 Purity and separating mixtures

51 exam-style questions on OCR GCSE Chemistry 2.1 Purity and separating mixtures, covering 2.1.1 Pure substances and melting point data, 2.1.2 Relative formula mass and empirical formula, 2.1.3 Formulations as useful mixtures, 2.1.4 Techniques for separating mixtures, and 2.1.5 Chromatography and Rf values. Each one has a worked solution and a mark scheme showing where the marks go.

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