Home
Class 12
CHEMISTRY
How much of the alpha-anomer and beta-an...

How much of the `alpha`-anomer and `beta`-anomers are present in an equilibrium mixture with a specific rotation of `+52.6^(@)`?

Text Solution

AI Generated Solution

To determine the amounts of the α-anomer and β-anomer present in an equilibrium mixture with a specific rotation of +52.6°, we can follow these steps: ### Step 1: Identify the specific rotations of the anomers - The specific rotation of α-D-glucose is +112°. - The specific rotation of β-D-glucose is +19°. ### Step 2: Set up the equation for specific rotation at equilibrium The specific rotation of a mixture can be calculated using the formula: ...
Promotional Banner

Topper's Solved these Questions

  • BIOMOLECULES

    AAKASH INSTITUTE ENGLISH|Exercise Section-J (Aakash challengers question)|6 Videos
  • BIOMOLECULES

    AAKASH INSTITUTE ENGLISH|Exercise (TRY YOURSELF)|17 Videos
  • BIOMOLECULES

    AAKASH INSTITUTE ENGLISH|Exercise Section-H (Multiple true false Type Questions)|5 Videos
  • AMINES

    AAKASH INSTITUTE ENGLISH|Exercise Assignment Section -J (Aakash Challengers Questions)|9 Videos
  • CHEMICAL BONDING AND MOLECULAR STRUCTURE

    AAKASH INSTITUTE ENGLISH|Exercise Assignment Section J (Aakash Challengers Questions)|10 Videos

Similar Questions

Explore conceptually related problems

The optical rotation of the alpha -form of a pyranose is +150.7^(@) , that of the beta -form is +52.8^(@) . In solution an equilibrium mixture of these anomers has an optical rotation of +80.2^(@) . The precentage of the alpha -form in equilibrium mixture is :

How much s and p characters are present in sp^3 hybrid orbitals?

How much of the total blood volume is present in heart ?

Correct the following statements by changing the underlined part of the sentence (Do not change the whole sentence). The phenomenon of change in rotation of plane polarized light by an optically active compound with time to an equilibrium value is called ul("specific rotation") .

The above process in which alpha and beta form remain in equilibrium with acyclic form and a change in optical rotation is observed which is known as -

The specific rotation of two glucose anomers are alpha = + 110^(@) and beta = 19^@ and for the constant equilibrium mixtures is +52.7^@ . Calculate the percentage compositions of the anomers in the equilibrium mixture.

Cholesterol, when isolated from natural sources, is obtained as a single enantiomer. The observed rotation alpha of a 0.3 g sample of cholesterol in 5mL of chloroform solution contained in a 10 cm polarimeter tube is -0.78^(@) . Calculate the specific rotation of cholesterol. A sample of synthetic cholesterol was prepared consisting entirely of (+)-cholesterol. This synthetic (+)-cholesterol was mixed with some natural (-)-cholesterol. The mixture had a specific rotation [alpha]_(D)^(20) " of " -13^(@). What fraction of the mixture was (+)-cholesterol ?

The enantiomeric excess and observed rotation of a mixture containing 6 gm of (+)-2-butanol and 4 gm of (-)-2-butanol are respectively (if the specific rotation of enantiomerically pure (+)-2-butanol is +13.5 unit).

D (+) Glucose has melting point 146^@ C and specific rotation [alpha]_(D)^(25) is + 112^@ C. Another D(+) Glucose has melting point 150^@ C and specific rotational [alpha]_(D)^(25) is + 18.7^@ C. The two form have significantly different optical rotation but when an aqueous solution of either form is allowed to stand, it rotation changes. The specific rotation of one form decreases and rotation of other increases until both solution show the same value +52.7^@ . The change in rotation towards an equilibrium value is called mutarotation. For mannose the mutarotation can be shown in brief as follow: