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4.1 Acids

4.1 Acids

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Question 34

Transition metal salts can be synthesized by reacting an insoluble metal precursor with a suitable acid.

Plan a laboratory experiment to prepare a pure, dry sample of nickel(II) sulfate crystals, NiSO4⋅6H2O\text{NiSO}_4 \cdot 6\text{H}_2\text{O}NiSO4​⋅6H2​O, starting from an appropriate insoluble nickel(II) compound and a suitable acid.

Your plan must include:

  • the names of both starting materials
  • a step-by-step description of the practical procedure, identifying the apparatus used at each stage
  • the specific steps taken to ensure the resulting crystals are pure and dry.
[6]
Markscheme

4.1 Acids Questions

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

276 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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