Home
Class 12
CHEMISTRY
An electric current is passed through an...

An electric current is passed through an aqueous solution of a mixture of alanine (isoelectric point 6.0), glutamic acid (3.2) and arginine (10.7) buffered at pH 6. What is the fate of the three acids?

A

Glutamic acid migrates to anode at pH 6. Arginine is present as a cation and migrates to the cathode. Alanine in a dipolar ion remains uniformly distributed in solution.

B

Glutamic acid migrates to cathode and others remain uniformly distributed in solution.

C

All three remain uniformly distributed in solution.

D

All three move to cathode.

Text Solution

Verified by Experts

The correct Answer is:
A
At pH= 6 , glutamic aicd exists as a dianionic species .

So it migrates to anode while arginine arginine exists as cationic specics.
So , it migrates to cathode .
Alanine does not migrate to any electrode at its isoelectric point .
Promotional Banner

Topper's Solved these Questions

  • INTRODUCTION TO BIOMOLECULES

    MTG-WBJEE|Exercise WB JEE WORKOUT (ONE OR MORE THAN ONE OPTION CORRECT TYPE)|10 Videos

  • INTRODUCTION TO BIOMOLECULES

    MTG-WBJEE|Exercise WB JEE PREVIOUS YEARS QUESTIONS (SINGLE OPTION CORRECT TYPE)|7 Videos

  • HYDROGEN

    MTG-WBJEE|Exercise WB JEE PREVIOUS YEARS QUESTIONS|2 Videos

  • IONIC EQUILIBRIA

    MTG-WBJEE|Exercise WB JEE PREVIOUS YEARS QUESTIONS|10 Videos

Similar Questions

Explore conceptually related problems

An electric current is passed through an aqueous solution ( buffered at pH=6.0) of a alanine (pl=6.0) and arginine (pI=10.2) . The two amino acids can be separated because

1F of electricity is passed through 10 L of a solution of aqueous solution of NaCl . Calculate the pH of the solution.

A mixture of which 0.2M aqueous solutions will form a precipitate the dissolves in 6M nitric acid:

A current of 0.75 A is passed through an acidic solution of CuSO_4 for 10 minutes. The vlume of oxygen liberated at anode (at STP) will be.

Which is a stronger acid - a solution with pH 6 or a solution with pH 3?

How much moles of sodium propionate should be added to 1L of an aqueous solution containing 0.020 mol of propionic acid to obtain a buffer solution of pH 4.75 ? What will be the pH if 0.010 mol of HCI is dissolved in the above buffer solution. Compare the last pH value with the pH of 0.010 M HCI solution. Dissociation constant of propionic acid, K_(a) , at 25^(@)C is 1.34 xx 10^(-5) .