Molality and Colligative Properties
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- Опубликовано: 26 сен 2024
- Solute particles interfere with the physical processes a solution may undergo. These are known as the colligative processes of a solution. Ever wonder why we put salt on icy streets? Find out here!
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i like how random RUclips are usually much better at explaining than the actually class teacher
He isn't random. He is Professor Dave Explains, second to only god.
@@rastiffi he does resemble Jesus in a way
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Vapor Pressure and Freezing Point Depression would be some pretty ａｅｓｔｈｅｔｉｃ names for a band, not gonna lie.
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@@ProfessorDaveExplains what is osmosis and osmotic pressure ?
This is one of colligative properties,isn't it ?
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Thank you for finally explaining Depression in freezing point to me after countless teachers have failed. It finally makes sense now.
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I always thought that salt accelerates boiling of water due to it having lesser heat capacity (heard that somewhere).
This video made me think and...
1) The supposed change in heat capacity from adding 1 mole of salt to 1 liter of water (55.5 moles) is ~0.5%, with same negliglible heating speedup
2) You'd have to spend extra 1/56 energy on heating salt itself too, so 1.7% slowdown.
3) The boiling point of solution is raised by 0.51 degrees, so another ~1% slowdown assuming water is at 25 degrees initially.
So salty will actually boil slower than "pure" water - the tap water already has some dissolved compounds, though.
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To be more descriptive , it was like watching an air liner fly overhead. But in slow motion.
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Thanks
Why tf are we still inflicted with school when RUclips is a 20x better teacher
dont you have to account for the particles in the compounds?
The definition of colligative properties saved my life
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sir could you make videos on solubility product..
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can you please make soem content on equivalent weight
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the particles with greater atomic or molecular size occupy more surface and cause a greater lowering in VP but you say it depends only and only on the number of solutes particles?
Short and sweet.
Thanks
All confusions removed !!! Thanks
Beautifully stated.
Why isn't van't Hoff's factor (i) in those colligative formulas'?
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Thank u professor
Nice video, very helpful. Also osmosis is affected from solute concentration.
Thanks Dave! Your video helped me a lot.
You're explaining in a super way sir ,that our mentours can't
Why isn't the van 't Hoff factor used in this video?
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I doesn't understand for long time that if solute doesn't vapourised why it make V.P of soln less now Get it up direct to heart ❤️😁
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my chemistry teacher shared the link of this video in the class
Please make the video on osmosis and osmotic pressure...It is related to solution and colligative property
Thank you!!
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Good
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Dear Dave,Can u make a video on vapour pressure seperately , i wanna know more about how its calculated and the related facts
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He moves his hair.
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Moving hands takes away energy from his massive brain.
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hey! so I totally understand freezing point depression from the perspective of solutes messing with the crystal lattice structure of solids. but I'm currently studying for the mcat and i was reading online that, above the freezing point, the vapor pressure of a liquid is greater than that of the corresponding solid, and that the opposite is true below the freezing point. and that the vapor pressures of the two phases are equal AT the freezing point. so if we think about it in these terms, if we add solute to a liquid, thereby lowering its vapor pressure, wouldn't that actually raise the freezing point (i.e. make it more "easily freezable")? because wouldnt the vapor pressure of the liquid now be closer to that of the solid? I know this obviously doesnt happen in nature because salt trucks would be causing more problems and not less. but just trying to understand freezing point from the perspective of vapor pressures. thanks!
Hello sir for the value of delta Tb the value comes 0.408 then you took 0.41 as an approximate value or my calculation is wrong
It was explained beautifully by professor dave but unfortunately you left osmotic pressure
Thanks professor dave!!!
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what happened to the freezing of water when salt is added?
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Sir i have question about this lecture.. sir colligative properties only depends upon the numbers of no volatile solute particles and independent upon the nature of solute nature ... sir if we have two different solutes which have different size of their molecules and larger size molecules solute blocks more particles of the solvent to evaporate hence nature is affected ... can you answer me please sir
Non-volatile *
science made easily understanble
Best tutor, thanks sir