AQA A level CHEMISTRY Paper 2
Queen Mary, University of London (QMUL)
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AQA A-level CHEMISTRY Paper 2 Organic and Physical Chemistry QP 2020.
- Exam (elaborations) • 29 pages • 2022
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AQA A-level CHEMISTRY Paper 2
Organic and Physical Chemistry
QP2020. 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 ...
Exam (elaborations)
AQA A-level CHEMISTRY Paper 2 Organic and Physical Chemistry QP 2020.
Last document update:
ago
AQA A-level CHEMISTRY Paper 2 Organic and Physical Chemistry QP2020. 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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