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प्रश्न
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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उत्तर
When glucose is heated with bromine water, it is oxidised to gluconic acid, a six-carbon carboxylic acid.
\[\begin{array}{cc}
\phantom{......}\ce{CHO}\phantom{.....................}\ce{COOH}\phantom{}\\
|\phantom{............................}|\phantom{..}\\
\phantom{.......}\ce{(CHOH)4->[Br2 water](CHOH)4}\\
|\phantom{............................}|\phantom{..}\\
\phantom{.............}\ce{\underset{\text{D-glucose}}{CH2OH}}\phantom{...............}\ce{\underset{\text{D-gluconic acid}}{CH2OH}}\phantom{....}
\end{array}\]
संबंधित प्रश्न
How many moles of acetic anhydride will be required to form glucose pentaacetate from 2M of glucose?
(a) 2
(b) 5
(c) 10
(d) 2.5
Differentiable between the following:
Amylose and Amylopectin
The spatial arrangement of the given molecule is denoted by:
Glucose does not give Schiff’s test because of the formation of cyclic ____________.
The symbols D and L represents ____________.
Which one of the following compounds is different from the rest?
When glucose reacts with bromine water, the main product is ____________.
A solution of D-glucose in water rotates the plane polarised light ____________.
Choose the correct relationship for glucose and fructose:
Which of the following pairs represents anomers?
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?
\[\begin{array}{cc}
\ce{CHO}\\
|\phantom{....}\\
\phantom{..}\ce{(CHOH)4}\\
|\phantom{....}\\
\phantom{..}\ce{CH2OH}
\end{array}\]
Account for the following:
What happens when D – glucose is treated with the following reagents
HNO3
Consider the following reactions:
(i) \[\ce{Glucose + R-OH ->[Conc. HNO3] [A] ->[X eq of][(CH3CO)2O] Acetyl derivative}\]
(ii) \[\ce{Glucose ->[Ni/H2] [A] ->[Y eq of][(CH3CO)2O] Acetyl derivative}\]
(iii) \[\ce{Glucose ->[Z eq of][(CH3CO)2O] Acetyl derivative}\]
'X, 'Y' and 'Z' in these reactions are respectively:
When D-glucose reacts with HI, it forms ______.
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:
