7405 3 qp - Study guides, Revision notes & Summaries

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AQA A-level CHEMISTRY Paper 2 Organic and Physical Chemistry QP 2020.
  • AQA A-level CHEMISTRY Paper 2 Organic and Physical Chemistry QP 2020.

  • Exam (elaborations) • 29 pages • 2022
  • AQA A-level CHEMISTRY Paper 2 Organic and Physical Chemistry QP 2020.This question is about rates of reaction. Phosphinate ions (H2PO2 – ) react with hydroxide ions to produce hydrogen gas as shown. H2PO2 – + OH− → HPO3 2– + H2 A student completed an experiment to determine the initial rate of this reaction. The student used a solution containing phosphinate ions and measured the volume of hydrogen gas collected every 20 seconds at a constant temperature. Figure 1 shows ...
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aqa A-level Chemistry Paper 3 (7405-3)-Question Paper-June2024.
  • aqa A-level Chemistry Paper 3 (7405-3)-Question Paper-June2024.

  • Exam (elaborations) • 50 pages • 2024
  • aqa A-level Chemistry Paper 3 (7405-3)-Question Paper-June2024.
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