Questions tagged [osmosis]
the spontaneous net movement of solvent molecules through a semi-permeable membrane into a region of higher solute concentration, in the direction that tends to equalize the solute concentrations on the two sides.
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membrane for a reverse osmosis desalination experiment
We are second year cram schoolers , we are currently working on a project tackling water desalination by reverse osmosis and are required to do an experience. During the process, we encountered some ...
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How will water move across a membrane that is permeable to only one solute?
If there are two solutions separated by a membrane, which is permeable only to one solute and the solvent, will there be any net movement? Let's assume the two solutes are glucose and sodium ions, ...
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Does osmotic pressure depend on the quantities of the outer membrane solvent?
$$\pi V = nRT$$
What is the osmotic pressure at $\pu{25^oC}$ of an aqueous solution of 0.0010 M $\ce{C12H22O11}$ (sucrose)?
We just need to substitute the data into equation (13.4)
$$\pi = \frac{\pu{...
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How does hydraulic equilibrium work on the particulate level?
I recently learned that osmosis occurs when there is a semipermeable membrane between pure water and a solution of water. The pure water then fills up the solution's side until, as my textbook put it,
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Is it appropriate to approximate solute particles in a dilute solution as an ideal gas?
I was studying osmosis and I came across the formula for osmotic pressure. I decided to see the derivation for osmotic pressure in a dilute solution. The derivation involved an equation involving the ...
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Why wouldn't solvents be interchanged in isotonic solutions?
While studying osmosis, my book remarks that
Two solutions having same osmotic pressure at a given temperature are called isotonic solutions. When such solutions are separated by semipermeable ...
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What is the osmosis equilibrium point of water beads (for plants)?
In theory, water beads for plants take in water when immersed in it to gradually release it to the roots of the plants. This process happens through osmosis. When the relative humidity is high enough, ...
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Dependence of Osmotic Effects on Particle Size
van't Hof's equation for osmotic pressure is derived with the assumption, among others, that the particle size of the solute is comparable to the particles size of the solvent. It holds well so long ...
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Reverse osmosis membrane used as an osmosis membrane
I recently came across the so-called 'thin-film composite membranes'. They are build up of layers with one of them being semipermeable. As I'm not well versed in chemistry, I'm unsure, if these ...
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Why does sugar water diffuse better than water through a gummy bear?
Our science class did a lab about osmosis, where we left a gummy bear in solutions of salt and sugar, as well as tap water. When we came back, we were all surprised to see that our gummy bears in ...
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Why does solvent particles move towards solution when semi permeable membrane is added?
When a SPM is added in between solute and solution the water molecules move towards salt water even though the concentration is same both sides. Why does this happen? According to SPM's perspective, ...
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Is there a way to calculate the osmotic pressure between two or even three solutions?
From what I've read about osmotic pressure, the "measurement" and "calculation" of osmotic pressure always applies to a system in which "pure water" and a solution is ...
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Osmotic pressure for non-electrical neutral region of a solution
For calculation of the osmotic pressure, we can use Van't Hoff equation as below:
π=CRT
If we put the solution in an electrical field, the cations and anions move towards negative and positive pols, ...
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Why one compartment in an osmotic container have different pressure?
I am reading about osmotic pressure and the derivation in Wikipedia, states:
Consider the system at the point when it has reached equilibrium. The condition for this is that the chemical potential of ...
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real meaning of osmotic and turgor pressures
I am a high school student and I am very confused in how we define osmotic pressure? Osmotic pressure is defined as the pressure required to stop the diffusion of solvent into a solution by applying ...
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