All Questions
Tagged with osmosis physical-chemistry
16
questions
5
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94
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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 ...
- 159
1
vote
1
answer
78
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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 :-
...
- 163
1
vote
1
answer
146
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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 ...
- 47
1
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1
answer
487
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Do solids in a solution also apply partial pressure? If yes, can this be used as an intuitive explanation for osmosis?
I know that in a mixture of different gases, we can assign every type of gas molecules a partial pressure so that the total pressure is the sum of all partial pressures. This can be extended to gas ...
- 19
1
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1
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Understanding the Osmotic Pressure formula
$$\Pi = iMRT$$
Can this be rewritten as $\Pi = ORT$ where $O =$ osmolarity? The only reason I ask is because my book doesn’t talk about the relationship between osmolarity and molarity, but I came ...
- 155
0
votes
2
answers
297
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Finding freezing temperature and osmotic pressure of an ethylene glycol and glycerol solution in water
A water solution is prepared by mixing $\pu{200 g}$ of a ethylene glycol (ethan-1,2-diol; $\ce{C2H6O2}$) solution (20% by weight) with $\pu{500 g}$ of glycerol (propan-1,2,3-triol; $\ce{C3H8O3}$) ...
- 11
0
votes
0
answers
49
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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 ...
- 252
2
votes
1
answer
179
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Is reverse osmosis a fancy term for filtration?
In Reverse Osmosis (RO) systems, the water to be purified is pushed against a semipermeable membrane and comes cleaner the other side, the path of water is the reverse of regular osmosis, hence the ...
- 126
3
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1
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Using osmotic pressure to find the molar mass of a compound
Working on-board a research vessel somewhere at sea, you have (carefully) isolated 12.5 micrograms $(\pu{12.5E-6 g})$ of what you hope is pure saxitoxin (a non-electrolyte) from a poisonous (and quite ...
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1
vote
2
answers
745
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Is Gibbs energy change during osmosis positive? If so then why is it spontaneous?
For ideal solution, μA=μA* +RT
lnxA
ln function is an increasing function, means that the higher the xA the higher the μA......(1)
Now consider osmosis. From Atkins' Physical Chemistry Ninth ...
- 1,241
1
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0
answers
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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 ...
- 11
1
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2
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Is that correct to say that osmosis happens with water only?
Is that correct to say that osmosis happens with water only (based on the definition below) or it can happen with other liquids as well?
I've read the following definition in a book called "BRS - ...
4
votes
2
answers
5k
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Two different containers full up with pure water and salt water in osmosis. What happens?
I would like to understand what happens when there are two containers which are connected together and separated by only semipermeable membrane. Then in one container I fill up (all the way to the top)...
2
votes
1
answer
1k
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What happens when a semipermeable membrane allows only one solute to pass through?
I'm essentially a medical student where we deal a lot with osmosis. But when we are taught, it is done generally with only a single solute in consideration.
What if two different solutes are used on ...
- 422
2
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3
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Use of osmosis to measure molecular weight of macromolecules
I found a question in a biochemistry book.
How can osmosis be used to measure molecular weight of macromolecules? Is it applied practically?
A general answer without the usage of many technical ...
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