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Stoichiometry

Glucose molec...

Question

Glucose molecule reacts with X number of molecules of phenyl hydrazine to yield osazone. The value of X is:

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Solution

Glucose first reacts with phenyl hydrazine giving phenylhydrazone. Then the adjacent $— C H O H$ group is oxidized by a $2^{n d}$ phenyl hydrazine molecule and itself is reduced to aniline. The resulting carbonyl group reacts with $3^{r d}$ phenyl hydrazine molecule giving osazone.

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