Home
Class 12
CHEMISTRY
In an aquose solution of D-Glucose the p...

In an aquose solution of D-Glucose the percentage of `alpha and beta` anomers at equilibrium condition are respectively

A

80 and 20

B

20 and 80

C

36 and 64

D

64 and

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • BIOMOLECULES

    AAKASH SERIES|Exercise PRACTICE EXERCISE|38 Videos

  • BIOMOLECULES

    AAKASH SERIES|Exercise SUBJECTIVE EXERCISE-1 (SHORT ANSWER QUESTIONS)|3 Videos

  • BIOMOLECULES

    AAKASH SERIES|Exercise OBJECTIVE EXERCISE - 1|173 Videos

  • ATOMIC STRUCTURE

    AAKASH SERIES|Exercise QUESTIONS FOR DESCRIPTIVE ANSWERS|43 Videos

  • CARBOHYDRATES

    AAKASH SERIES|Exercise Practice Sheet-5|30 Videos

Similar Questions

Explore conceptually related problems

The aqueous solution of glucose is 10% w/w of solution, the percentage of w/w of solvent is

When an aqueous solution of D-glucose is treated with a base, it is converted into D-fructose and D-mannose, this conversion (isomerisation) involves

If alpha, beta are solutions of a cos x + b sin x = c then sin alpha + sin beta =

The optical rotation of the alpha form of a pyranose is + 150.70, that of the beta form is +52.80. In solution an equlibrium mixture of the anomers has an optical rotation of +80.20. The percentage of the alpha form at equilibrium is

If alpha, beta are solutions of a cos x + b sin x = c then cos alpha + cos beta=

D(+) Glucose has melting point 140^(@)C and specific rotation [a]_(D)^(25) is 112^(@)C . Another D(+) Glucose has melting point 150^(@)C and specific rotation [a]_(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 [alpha]_(D)^(25) = +18.7^(@)C " " [alpha]_(D)^(25) = +112^(@)C What percentage of beta-D-(+) glucopyranose found at equilibrium in the aqueous solution?

If alpha, beta are solutions of a tan theta + b sec theta = c then tan (alpha + beta)=

If alpha, beta are the solutions of a cos 2theta + b sin 2theta = c , then tan alpha tan beta=

D(+) Glucose has melting point 140^(@)C and specific rotation [a]_(D)^(25) is 112^(@)C . Another D(+) Glucose has melting point 150^(@)C and specific rotation [a]_(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 [alpha]_(D)^(25) = +18.7^(@)C " " [alpha]_(D)^(25) = +112^(@)C Mutarotation is characteristic feature of

AAKASH SERIES-BIOMOLECULES-OBJECTIVE EXERCISE - 2
  1. Which of the following reagents can not be used to distinguish between...

    Text Solution

    |

  2. Oxidation of glucose with Ag(2)O gives

    Text Solution

    |

  3. In an aquose solution of D-Glucose the percentage of alpha and beta an...

    Text Solution

    |

  4. alpha-D- Glucose and beta - D glucose differ from each other due to di...

    Text Solution

    |

  5. Which of the following statements is correct about D-Glucose & D-Galac...

    Text Solution

    |

  6. The number of chiral centers in the open chain structure of glucose is

    Text Solution

    |

  7. The specific rotation of a freshly prepared solution of alpha-D- Gluco...

    Text Solution

    |

  8. With how many molecules of acetic anhydride does not molecule of gluco...

    Text Solution

    |

  9. Which one of the following statements is not true for glucose?

    Text Solution

    |

  10. {:("List - I","List - II"),("A) "alpha" and "beta-D" Glucose","1) Muta...

    Text Solution

    |

  11. D -Glucose shows mutarotation because,

    Text Solution

    |

  12. The number of chiral centres in the cyclic hemiacetal form of Glucose ...

    Text Solution

    |

  13. The end product (B) formed in the reaction sequence. Glucose underset(...

    Text Solution

    |

  14. The two functional groups present in a typical carbohydrate are

    Text Solution

    |

  15. Incorrect statements among the following (A) Sucrose is reducing sug...

    Text Solution

    |

  16. Regarding lactose some statements are given below (A) On hydrolysis ...

    Text Solution

    |

  17. The end products of protein hydrolysis are

    Text Solution

    |

  18. IUPAC name of Glycine is

    Text Solution

    |

  19. D-Alanine differs from L - Alanine with respect to

    Text Solution

    |

  20. Which of the following does not exit as a zwitter ion ?

    Text Solution

    |