English
Karnataka Board PUCPUC Science 2nd PUC Class 12

What happens when D-glucose is treated with the following reagent? HI - Chemistry

Advertisements
Advertisements

Question

What happens when D-glucose is treated with the following reagent?

HI

Short Note

Solution

When D-glucose is heated with HI for a long time, n-hexane is formed.

\[\begin{array}{cc}
\ce{CHO}\phantom{...............................................}\\
|\phantom{..................................................}\\
\ce{(CHOH)4 ->[HI][\Delta] \underset{{n}-hexane}{CH3 - CH2 - CH2 - CH2 - CH2 - CH3}}\\
|\phantom{..................................................}\\
\ce{\underset{{D-glucose}}{CH2OH}}\phantom{..........................................}
\end{array}\]

shaalaa.com
  Is there an error in this question or solution?
Chapter 14: Biomolecules - Exercises [Page 423]

APPEARS IN

NCERT Chemistry [English] Class 12
Chapter 14 Biomolecules
Exercises | Q 9.1 | Page 423

RELATED QUESTIONS

Write the reaction that indicates the presence of -CHO group in glucose


What happens when glucose is treated with hydroxylamine?


Maltose is a 

(a) Polysaccharide

(b) Disaccharide

(c) Trisaccharide

(d) Monosaccharide


What happens when glucose is treated with hydrogen cyanide?


Write the product when D-glucose reacts with conc. HNO3.


The following compound can be called as:


The number of asymmetric carbon atom(s) below the figure is/are


The symbols D and L represents ____________.


Which is the least stable form of glucose?


A solution of D-glucose in water rotates the plane polarised light ____________.


The number of chiral carbon atoms present in cyclic structure α-D(+) glucose:


The α-D glucose and β-D glucose differ from each other due to difference in carbon atom with respect to its ____________.


The two forms of D-glucopyranose obtained from the solution of D-glucose are called ____________.


Choose the correct relationship for glucose and fructose:


Which of the following pairs represents anomers?


Account for the following:

What happens when D – glucose is treated with the following reagents

Bromine water


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:


Give the reaction of glucose with hydrogen cyanide. Presence of which group is confirmed by this reaction?


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×