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Questions
Write the reaction involved when D-glucose is treated with the following reagent:
Br2 water
What happens when D-glucose is treated with the following reagent?
Bromine water
Solution
When glucose is heated with bromine water, it is oxidised to gluconic acid, a six-carbon carboxylic acid.
\[\begin{array}{cc}
\phantom{........}\ce{CHO}\phantom{.............}\ce{COOH}\phantom{..}\\
\phantom{.}|\phantom{..................}|\\
\phantom{.......}\ce{(CHOH)4->[Br2 water](CHOH)4}\\
\phantom{.}|\phantom{..................}|\\
\phantom{.............}\ce{\underset{\text{D-glucose}}{CH2OH}}\phantom{........}\ce{\underset{\text{D-gluconic acid}}{CH2OH}}\phantom{.}
\end{array}\]
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| (I) |  |
| (II) |  |
| (III) |  |
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