CSEC Chemistry · January 2008 · Paper 2 · Question 1(a)(i)

A student investigates reaction rates using five KIO3 solutions of different concentrations (0.001 to 0.005 mol dm⁻³) and a fixed volume of Solution P (containing NaHSO3, dilute H2SO4, and starch indicator). The time for a blue color to appear is recorded using stopwatches, as shown in Figure 1.

Complete Table 1 below to show, for the concentration of KIO3 solution used, the corresponding times in seconds (s) and the reciprocal times (1/t) at which the blue colour appears.

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