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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
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Solution
When glucose is heated with bromine water, it is oxidised to gluconic acid, a six-carbon carboxylic acid.
\[\begin{array}{cc}
\phantom{......}\ce{CHO}\phantom{.....................}\ce{COOH}\phantom{}\\
|\phantom{............................}|\phantom{..}\\
\phantom{.......}\ce{(CHOH)4->[Br2 water](CHOH)4}\\
|\phantom{............................}|\phantom{..}\\
\phantom{.............}\ce{\underset{\text{D-glucose}}{CH2OH}}\phantom{...............}\ce{\underset{\text{D-gluconic acid}}{CH2OH}}\phantom{....}
\end{array}\]
RELATED QUESTIONS
Maltose is a
(a) Polysaccharide
(b) Disaccharide
(c) Trisaccharide
(d) Monosaccharide
Write the reaction involved when D-glucose is treated with the following reagent:
(CH3CO)2O
Choose the appropriate answer(s) for the below representation from the options given
Acetylation of glucose yields ____________.
The symbols D and L represents ____________.
Glucose reacts with acetic anhydride to form ______.
Which is the least stable form of glucose?
The number of chiral carbon atoms present in cyclic structure α-D(+) glucose:
The two forms of D-glucopyranose obtained from the solution of D-glucose are called ____________.
How will you distinguish 1° and 2° hydroxyl groups present in glucose? Explain with reactions.
Assertion: D (+) – Glucose is dextrorotatory in nature.
Reason: ‘D’ represents its dextrorotatory nature.
Write the reactions of D-glucose which can’t be explained by its open-chain structure. How can cyclic structure of glucose explain these reactions?
On the basis of which evidences D-glucose was assigned the following structure?
\[\begin{array}{cc}
\ce{CHO}\\
|\phantom{....}\\
\phantom{..}\ce{(CHOH)4}\\
|\phantom{....}\\
\phantom{..}\ce{CH2OH}
\end{array}\]
What happens when D-glucose is treated with the following reagent?
HI
Account for the following:
What happens when D – glucose is treated with the following reagents
Bromine water
Glucose with excess of phenyl hydrazine forms ______.
When D-glucose reacts with HI, it forms ______.
Give the reaction of glucose with hydrogen cyanide. Presence of which group is confirmed by this reaction?
The reagents with which glucose does not react to give the corresponding tests/products are:
- Tollen’s reagent
- Schiff’s reagent
- HCN
- NH2OH
- NaHSO3
Choose the correct options from the given below:
