Posted by Mary on .
Will iodine react with sucrose or glucose? I would say no, because it reacts with starch, a polysaccharide, and glucose is a monosaccaride and sucrose is a combination of fructose and glucose, two monosaccharides. Am I right? Why or why not? How does iodine cause a reaction to starch? Thanks!
When iodine iw dissolved in an aqueous solution of potassium iodide — it reacts with starch producing a purple black color.