Home
Class 11
BIOLOGY
What is Donnan equilibrium....

What is Donnan equilibrium.

Text Solution

Verified by Experts

1. Whithin the cell, some of the ions never diffuse out through the membrane . They are trapped within the cell and are called fixed ions. But they must be balanced by the ions of opposite charge.
2. Assuming that a concentration of fixed anions is present inside the membrane more cations would be absorbed in addition to the normal exchange to maintain the equilibrium .
Therefore , the cation concentration would be greater in the internal than in the external solution. This electrical balance or equilibrium controlled by electrical as well as diffusion phenomenon is known as the Donnan equilibrium.
Promotional Banner

Similar Questions

Explore conceptually related problems

Dissociation equilibrium constant of HI is 2.06xx10^(-2) at 458^(@)C . At equilibrium, concentrations of HI and I_(2) are 0.36M and 0.15M respectively. What is the equilibrium concentration of H_(2) at 458^(@)C .

What is equilibrium ? (or) Define mechanical equilibrium of a rigid body.

What is water gas equilibrium ?

What is equilibrium constant ?