CAPE Chemistry Unit 1 · 2013 · Paper 2 · Question 5(b)(ii)b)

The values of initial rates measured for the reaction S₂O₃²⁻ + 2I⁻ → 2SO₄²⁻ + I₂ are recorded in Table 3.

Calculate the initial rate of the reaction when [S₂O₃²⁻]₀ = 0.13 mol dm⁻³ and [I⁻]₀ = 0.32 mol dm⁻³.

This question uses a figure or table from the paper — you'll see it when you practise.