hi everybody i need some information regarding silvering of mirrors using tollenreagent and glucose....with chemical reactions ,,,,, hope someone can help me anis
(This site also later shows an oxidation reaction of the CH2OH group using alkaline KMnO4!)
An aqueous solution of glucose consists of an equilibrium mixture of the open chain molecule containing the aldehyde group (about 0.002%) and the cyclic hemiacetal form (which does not have an aldehyde group to react with Tollens' reagent). (For an illustrations of the formation of the cyclic hemiacetal structure, see for example http://www.elmhurst.edu/~chm/vchembook/543glucose.html and http://www.cem.msu.edu/~reusch/VirtualText/carbhyd.htm.)
A procedure for producing a silver mirror in a large flask using glucose (dextrose) is at http://chemlearn.chem.indiana.edu/demos/TOLLENS.htm. The chemical reaction is the general aldehyde one shown above with the open chain form of D-glucose.
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