A-LevelChemistryReaction kineticsMay/June 2024Paper 4 Q58 Marks
In aqueous solution, persulfate ions, S2O82-, react with iodide ions, as shown in reaction 1. reaction 1 S2O82- + 2I-→2SO42- + I2 The rate of reaction 1 is investigated. A sample of S2O82- is mixed with a large excess of iodide ions of known concentration. The graph in Fig. 5.1 shows the results obtained. [Figure 5.1]
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