Assume there is a left beaker with solutes, a 100 MWCO membrane, and a right beaker with distilled H2O. You can choose to put either 5.00mM NaCl or 5.00 mM glucose into the left beaker. Which solution would give you the highest osmotic pressure? Explain in detail.
What would happen with a 20 MWCO membrane?
The NaCl solution will give the highest osmotic pressure. Osmotic pressure increases as the number of molecules or solute increase. In solution glucose will remain as single molecule where as Nacl will dissociate to Na and Cl ions. Osmotic pressure is a colligative property and it increase as the number of solute molecule increase.
100 mwco membrane has large pore size than 20 mwco. 100 mwco membrane will permit diffusion of Na and Cl ion from left beaker to right beaker where as 20 mwco will not. So when 100 mwco is replaced with 20 mwco, all Na and Cl ions will retain in the left chamber and osmolarity or osmotic pressure will be increased.
Get Answers For Free
Most questions answered within 1 hours.