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.
78
questions
5
votes
1
answer
94
views
Relation between dilution and osmotic pressure
The following question is taken from IAT 2024, an entrance test for research institutes in India at the high school level:
Which one of the following plots correctly describes the variation of ...
1
vote
3
answers
2k
views
How can semi-permeable membrane be so smart?
According to the definition, a semi-permeable membrane is a membrane that allows only solvent molecules to pass through it; solute molecules are blocked. Solvent molecules flow from the membrane side ...
2
votes
1
answer
48
views
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{...
CommunityBot
- 1
2
votes
1
answer
139
views
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,
...
CommunityBot
- 1
0
votes
0
answers
49
views
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 ...
- 621
1
vote
1
answer
78
views
What is the exact definition of isotonic solutions?
Background of the Question
I am a high school student so maybe my understanding of this topic is quite less, so apologies in case I have asked an elementary question.
My chemistry sir taught that :-
...
- 41.3k
-2
votes
2
answers
71
views
Can you clearly explain what osmotic pressure is?
There are two main questions I'm struggling to get my head around.
What exerts osmotic pressure? Is it the molecules of the solvent (water) or solute particles (sugar) ?
Where is it exerted? On the ...
- 29.2k
14
votes
5
answers
3k
views
How does osmosis work?
I have (very) basic knowledge in chemistry.
I am curious as to why osmosis works. I read a couple of introductory chemistry books and also searched online but most explanations I found only explained ...
- 2,296
1
vote
1
answer
784
views
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 ...
- 1
1
vote
1
answer
146
views
When does osmosis stop?
In the figure given below:-
Since only solvent particles can move through semipermeable membrane, if we manage to keep pressure on both the containers equal say by keeping weights, will osmosis go ...
- 42.7k
-4
votes
1
answer
42
views
Difference in salinity and/or sugar content: Does it have a name? [closed]
Let's say that I put a tea infuser full of high-salt and/or high-sugar content, into a tea pot full of fresh water. I know that the salt and/or sugar will move from the infuser to the tea pot until ...
- 42.7k
1
vote
0
answers
164
views
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, ...
- 44.3k
0
votes
1
answer
68
views
What happens to a solute's potential energy during diffusion?
I was thinking, if you have a large amount of water, with an uneven solute concentration, diffusion will lead to an even concentration of solute throughout the solution.
Intuitively,that would mean ...
CommunityBot
- 1
-4
votes
1
answer
76
views
What is the significance of semipermeable membrane in osmosis? [closed]
My teacher said that semipermeable membrane allows passage of only selected particles and then said that it is required for osmosis but I cannot totally understand the main function of semipermeable ...
- 44.3k
4
votes
2
answers
2k
views
Does Reverse Osmosis remove elemental ions from water?
From what I understand, RO is able to remove (or at least considerably reduce) the salts dissolved in water.
But thinking about it just doesn't make sense. RO works by filtering the solution using a ...
- 651