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4.1 Acids

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Question 16
F

A student wants to make pure, dry crystals of hydrated zinc sulfate. Zinc carbonate and zinc oxide are both insoluble in water. Which method is suitable?

[1]
A

Add excess sulfuric acid to zinc carbonate, then crystallise the solution

B

Mix zinc chloride and sodium sulfate solutions, then filter off the solid

C

Titrate zinc oxide with sulfuric acid using an indicator, then crystallise

D

Add excess zinc carbonate to sulfuric acid, filter, then crystallise

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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