1explain the patterns of diffusion you observed when the 50...

Explain the patterns of diffusion you observed. When the 50 MWCO membrane was in place, why was NaCl (MW = 57) able to diffuse through? 2. Osmosis, simple diffusion, and filtration are all forms of passive transport. What is the difference between filtration of water and osmosis? Filtration of solute and simple diffusion? 3. Do different solutes generate different osmotic pressures? Why or why not? 4. Imagine a situation where two beakers are filled with a solution and separated by a 100 MWCO membrane. The beaker on the left contains a 10 mM NaCl solution, and the beaker on the right contains deionized water. The solutions are allowed to equilibrate for 5 minutes. At the end of the 5 minutes, the NaCl concentration in the right beaker is 7 mM. Calculate the ADR.

Transcript

00:01 Here in this question we are talking about the diffusion.

00:03 So first of all when we talk about the diffusion it is basically the movement of molecule from the area of higher concentration to the lower concentration.

00:11 So in the very first question when we are given 50 molecular weight cut off membrane here the nacl molecular weight comes out to be nacl is 57 which is able to diffuse through because the membrane pores are large enough to allow the passage of the nacl.

00:30 So here the pores are large.

00:34 When we talk about the mwco value which indicates the small molecular weight then here it counts to be 50 and it can allow the solutes which is less than or equal to 50.

00:48 So it will pass only molecular weight of 50 because the pores are small in this case.

00:54 It will allow only 50 or less than 50.

00:59 So equal to or less than 50.

01:06 The second part of the question involves the filtration of water and osmosis which involves the movement of water through a semi -permeable membrane.

01:13 So when we talk about the filtration, the filtration is basically driven by the hydrostatic pressure and here the osmosis is driven by the solute concentration across the membrane.

01:24 So for the filtration you can say that it is facilitated by the hydrostatic pressure and when we talk about the osmosis, the osmosis deals with the difference in the solute concentration.

01:48 Difference in solute concentration.

01:58 So from here we can say that filtration of the solute and simple diffusion inverts the movement of solute but filtration is driven by hydrostatic pressure.

02:07 So it requires a semi -permeable membrane and simple diffusion is driven by the concentration of gradient so it does not require the membrane...

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