Question

Which one of the following is not true for membrane selection?

(a) Membrane should be highly polymerized thin films

(b) Membrane should swell in presence of solvent

(c) Volume of the solution being dialyzed by the membrane

(d) Membrane should be chemically inert.

I had been asked this question by my school teacher while I was bunking the class.

My enquiry is from Enzymes Purification topic in portion Enzymes Purification of Enzyme Technology

Answer 1

The correct answer is (c) Volume of the solution being dialyzed by the membrane

For explanation I would say: The one statement which is not true for membrane u volume of the solution being dialyzed by the membrane. As this one of the rate limiting factors for dialysis. Dialysis membranes should be in the form of thin films made up of highly polymerized materials, which swell in the presence of solvent allowing low molecular weight substances to pass while preventing high molecular weight substances. The membrane should be chemically inert and without fixed charged groups.