I. The reaction between iodide and hydrogen peroxide produces triiodide. The triiodide ions are reduced back to iodide by thiosulfate at a much faster rate, until the thiosulfate is consumed. Then the ...

I. The reaction between iodate and bisulfite in acid medium produces iodine. Solutions A (iodate) and B (bisulfite) are mixed at room temperature in differing concentrations, producing a blue-black ...

Footage shows the stunning moment of a dynamic colour shift during an iodine clock reaction. The students can be seen pouring the liquid substances into the glass container, while the crowd ...

The 'iodine clock' reaction occurs when two colourless solutions are mixed in a conical flask. After a period of time (which varies between several seconds and several minutes) the mixture turns ...

The second assessment involved a practical challenge in the undergraduate wet chemistry laboratory in which teams helped Dr Strange ‘calibrate time with chemistry’ by devising a procedure for an ...