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4.1 Acids

4.1 Acids

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Question 144

In an investigation, a student added powdered magnesium oxide to dilute sulfuric acid and recorded the pH.

Their experimental method was: step 1 Measure 150 cm3 of dilute sulfuric acid into a glass beaker. step 2 Add 0.2 g of magnesium oxide powder to the beaker. step 3 Determine the pH of the mixture. step 4 Repeat steps 2 and 3 until the pH no longer changes.

State one action that should be taken immediately after step 2 to ensure that the magnesium oxide reacts fully with the acid.

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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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