Which of the statements below best describe the term electroosmosis? A) It can b

Question

Which of the statements below best describe the term electroosmosis?

A) It can be defined as the distance from the injector where a neutral sample is placed to the detector divided by the migration time of the neutral molecule.

B)The fluid pressure difference in the capillary pushes all of the ions in a uniform direction towards the cathode or anode depending on the setup.

C)The dominant ion in the diffuse part of the electric double layer creates a bulk flow in the capillary that moves all particles towards either the cathode or the anode depending on the nature of the dominant ion.

D)By adding an excess of protons to the fluid in the capillary, neutral molecules become increasingly positively charged based on size and can then be eluted accordingly.

Explanation / Answer

C)The dominant ion in the diffuse part of the electric double layer creates a bulk flow in the capillary that moves all particles towards either the cathode or the anode depending on the nature of the dominant ion.(correct option)

In a capillary(containing charged analyte) with an electric field across its length,the counter-ions near the surface migrates towards the opposite pole of the electric field.And the ions from the bulk moves to take their place near the surface,this creates a bulk flowof ions towards the electric pole in electroosmosis.

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