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2.1 Purity and separating mixtures

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Question 10
F

Metal X forms a sulfate with the formula X2(SO4)3\mathrm{X_{2}(SO_{4})_{3}}X2​(SO4​)3​.

The relative formula mass of X2(SO4)3\mathrm{X_{2}(SO_{4})_{3}}X2​(SO4​)3​ is 342.3.

Relative atomic mass (ArA_{r}Ar​): O = 16.0 S = 32.1

Use the Periodic Table. What is metal X?

[1]
A

Aluminium

B

Iron

C

Magnesium

D

Chromium

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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