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4.1 Acids

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Question 11
H

Scandium, Sc, reacts with dilute hydrochloric acid to form scandium chloride and hydrogen gas.

When 0.450 g of scandium reacts completely with excess acid, 0.0300 g of hydrogen gas is produced. Relative atomic masses: Sc = 45, H = 1

What is the formula of scandium chloride?

[1]
A

ScCl2\mathrm{ScCl_{2}}ScCl2​

B

ScCl3\mathrm{ScCl_{3}}ScCl3​

C

ScCl6\mathrm{ScCl_{6}}ScCl6​

D

Sc2Cl3\mathrm{Sc_{2}Cl_{3}}Sc2​Cl3​

Markscheme

4.1 Acids Questions

  1. GCSE
  2. /Chemistry
  3. /4.1 Acids

44 exam-style questions on Edexcel GCSE Chemistry 4.1 Acids, covering 4.1.1 Acids, alkalis and the pH scale, 4.1.2 Hydrogen ion concentration and pH, 4.1.3 Dilute and concentrated, weak and strong acids, 4.1.4 Bases, alkalis and the reactions of acids, 4.1.5 Chemical tests for hydrogen and carbon dioxide, 4.1.6 Neutralisation as a reaction of acids with bases, 4.1.7 Preparing soluble salts, and 4.1.8 Solubility rules and preparing insoluble salts. Each one has a worked solution and a mark scheme showing where the marks go.

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