Home
Class 12
CHEMISTRY
The K(alpha) and K(beta) values of a-ami...

The `K_(alpha) and K_(beta)` values of a-amino acids are very low. Explain.

Text Solution

Verified by Experts

The `K_(a)and K_(b)` values of `alpha`-amino acids are very low because, in `alpha`-amino acids, the acidic group is `-overset(+)(N)H_(3)` instead of `-COOH` in carboxylic acids and basic group is `-COO^(-)` instead of `-NH_2` is group in aliphatic amines. Fro example , the `K_(a) and K_(b)` values of glycine are `1.6xx10^(-10) and 2.5xx10^(-12)` respectively.
Promotional Banner

Topper's Solved these Questions

  • BIOMOLECULES

    PRADEEP|Exercise Higher order Thinking skills (Hots Problems )|1 Videos

  • BIOMOLECULES

    PRADEEP|Exercise Higher order Thinking skills (Questions and problems with answers/solution(Hots Questions) P.1|1 Videos

  • BIOMOLECULES

    PRADEEP|Exercise ADDITIONAL QUESTIONS (Very Short Answer Questions)|74 Videos

  • APPENDIX

    PRADEEP|Exercise MODEL TEST PAPER <br> (Section C )|15 Videos

  • CHEMICAL KINETICS

    PRADEEP|Exercise ADVANCED PROBLEMS FOR COMPETITIONS|14 Videos

Similar Questions

Explore conceptually related problems

Amino acid glycine (NH_(2)-CH_(2)-COOH) exists as a zwitter ion in aq. Solution. The K_(a) and K_(b) values of glycine are 1.6xx10^(-10)(Pk_(a)=9.8) and 2.5xx10^(-12)(pk_(b)=11.6) respectively. The K_(a) and K_(b) values are for zwitter ion of Amino acid with following strctures [NH_(3)^(+)-CH_(2)-COO^(-)] What is the K_(b) for -NH_(2) group in glycine?

K_(alpha) and K_(beta) X-rays are emitted when there is a transition of electron between the levels

The strength of elctrolytes is expressed in terms of degree of dissociation alpha For strong electrolyte alpha is close to one and for weak electrolytes alpha is quite small. According to Ostwald Dilution Law alpha=sqrt((K)/(C)) For an acid [H^(+)] = sqrt(K_(a)C) For a base [OH^(-)] =sqrt(K_(b)C The relative strengths of acids or bases can be compared in terms of the square roots of their K_(a) " or " K_(b) values. A monoprotic acid in 0.1 M solution ionises to 0.001 % . Its ionisation constant is :

Let lambda_(alpha'), lambda_(beta),and lambda'_(alpha) denote the wavelength of the X-ray of the K_(alpha), K_(beta), and L_(alpha) lines in the characteristic X-rays for a metal. Then.

If the frequency of K_(alpha), K_(beta) and L_(alpha) , X-ray lines of a substance are v_(K_(alpha)), v_(K_(beta)) , and v_(L_(beta))

Assertion : Amino acids are called alpha -amino acids. Reason : Amino acids are organic compounds containing an amino group and an acidic group as substituents on the alpha -carbon.

In X-ray experiment K_(alpha),K_(beta) denotes