The different lengths of time needed to achieve the starch/iodine complex shows the effect of temperature on reaction rates. Reactions A1-A3 dominate (A3 is very fast) until all HSO3- is consumed. I3- ...

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 ...

This glucose is: After a few minutes, the parts of the leaf that contain starch turn the iodine from brown to blue/black. Variegated leaves have green parts (where the cells contain chlorophyll ...

Iodine solution is an irritant. Eye protection must be worn. Starch is produced from glucose made during photosynthesis. Areas of the leaf exposed to the light should turn blue–black when iodine ...

A tiny drop of glucose solution turns the iodine-starch suspension a deep blue color in the presence of glucose oxidase. While lovely, colorimetric reactions such as these aren’t optimal for ...