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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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 ...
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Can H4O 2+ form?
Like $\ce{NH4+}$ ,Is there any possibility of formation of $\ce{H4O^{2+}}$ (of tetrahedral structure)?
My theory is: it can be formed by osmosis setup where heavy acids like $\ce{H3PO4}$ or $\ce{...
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What is the maximum osmotic pressure that can be exerted with water as the solvent at room temperature?
Lets say we have a membrane which separates a tank of pure water from a tank of water saturated with a solute(there are also undissolved chunks of solute which can immediately dissolve if water is ...
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What is the colloidal osmotic pressure?
The oncotic pressure or colloidal osmotic pressure is the osmotic pressure developed due to the presence of colloids in a solution. But since the colloids are not true solution, why should the ...
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Can I equalise osmotic pressure using two different solutes?
I understand that there is a pressure gradient between an aqueous solution, e.g. salty water, and, say, pure water due to osmosis. My question is, is it possible to match or almost match, the osmotic ...
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Is the salt of a weak acid and a weak base also a weak electrolyte?
I'm able to find a lot of information on acids and bases, as well as strong-strong, weak-strong, and strong-weak salts. However all the introductory materials on electrolytes just stop there and say "...
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Why is pickle salty? How does salt get into pickle?
I know this may look like some question easily answered with common sense, but please read.
If water is the solvent wouldn't the only thing that moves be water? (Osmosis)
Edit: this is basically ...
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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 ...
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How might one reduce the concentration of bubbles in their ice, from ice cube trays?
So I have been freezing ice a lot recently, and I will come out and say it, as it turns out it is, albeit unlikely, it is sometimes possible for ice to "explode." I was not so aware of this before, ...
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Questions Regarding Osmosis
From Costanzo's Physiology:
Osmosis of water is not diffusion of water: Osmosis occurs because of a pressure difference, whereas diffusion occurs because of a concentration (or activity) difference ...
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How to create a simple do-it-yourself procedure to measure diffusion?
While I am not asking the question here, a recent question concerning osmosis at the Bio SE caught my interest. In a nutshell that question was, given isotonic solutions of sugar inside and outside an ...
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Why is dialysis tubing impermeable to sucrose?
This question was posed a couple years ago but not answered adequately. You can view the older thread here. The cellulose membrane commonly used in high school and university labs is widely available ...
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Fundamental physical forces behind osmosis
I wonder which fundamental forces act behind osmosis process? Sum of these forces oppose gravity force, like in this figure:
So I wonder what are these forces?
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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)...
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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 ...
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