Van der Waals equation for real gases | video in HINDI
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- เผยแพร่เมื่อ 23 ส.ค. 2024
- In this Physics / Chemistry video lecture in Hindi we derived Van der Waals equation for real gases. It is the modified version of ideal gas equation. While in ideal situation PV = nRT, where, P is ideal pressure and V is ideal volume. But in real situation pressure is less than ideal pressure, because of Van der Walls forces and volume is more than ideal volume due to the volume of the molecules.
Van der Waals equation turns out to be the real gas equation and it is [P + a(n/V)^2] [ V - bn ] = nRT. Here, a and b are two constants depending upon the nature of the gas and these slightly depend upon temperature and pressure also. So we can not say that a and b are absolute constants for a gas.
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I was so confused about the correction terms but i knew only you will have the right explaination.
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skill issue
ise explain karna itna aasan nahi hai lekin apne bahut shandar explain Kiya thank-you sir aur Meri request hai ki quantum mechanics par bhi lecture banaiye
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Volume correction mein kuch galti hai ya phir main galat samjha:
Vi is the ideal volume, which means that it is the volume considered after assuming that the volume occupied by gas molecules is negligible. Basically, Vi = Vc, Vc = total volume of container.
Vr = real volume, the volume considered after assuming that molecules also occupy a fraction of the container volume (Vc). Thus, Vr < Vi.
And in fact, nothing can be higher than Vi since Vi is the entire container's volume.
Correct
Yes , same doubt v real should be less than v ideal because volume of molecules also considered , i have watched 5 videos no one explain it
why in ideal gas equation we put Pideal = Preal+ an2/v2 BUT when we talk about Videal = Vreal - bn , is'y this wrong equation ? it should be Vreal = Videal - bn , so we should put Videal = Vreal + bn in the ideal gas equation then WHY WHY WHY do we put Videal = Vreal - bn???????????????
Yes , same doubt v real should be less than v ideal because volume of molecules also considered , i have watched 5 videos no one explain it.
I have been been searching for one perfect video which will clear all my doubts about real gas equation derivation, and this is that perfect video. Thank you so much😃
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no! volume of ideal gas is available free space which is volume of container. So volume of real gas should less than volumenof ideal gas.
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perfect explanation! one of the best video available online of vander Waal's Equation. love from Punjab !
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Sir Please share van der waal interaction in molecules
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I was totally confused earlier
I watched 5 different lectures on the same topic but still remain with confusion
Now it's removed,due to this satisfactory explaination.
Thank to producer
sir kya app Maxwell velocity distribution upload karange with proof B.SC 1st year k liye
Hello Samoresh Ghuku !
Yes ! Very soon. Stay with us.
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EduPoint
Sir please upload soon
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Sir not able to understand the square part of n/v . please please help me..
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A question ✋... In Vander Waals equation we take pressure of ideal gas whereas volume is of real gas? Could you please explain
Siddharth Gupta
Volume ka bhi correction hota hai vo next video me sayad batayege
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Not able to understand the square part of molar density, one (n/V) i am able to understand the next (n/V) i am not able to understand.
You can think in this way ---- the number of molecules hitting the wall is proportional to the number density and if the number density decreases, the no. of molecules colliding with the wall at a time also decreases resulting in reduction in the pressure. That's why the second n/V factor comes.
Gaseous state physical chemistry chapter not uploaded why
ise aapne bhut hi aasan method se explain kar diya . thank you very much sir
If we are not considering volume of molecule than Videal = Volume of container , and in V real we consider the volume of molecules but the molecules are also present in the same container than how can we say Videal less than V real
Volume mean actually freely available space for motion of molecules
If we see in ideal gas whole container volume is available for their mition
But in case if real Gas
Real gas occupied some space for them
Now the remaining space is available us an actual volume for motion of these molecules
That why we can say that ideal gas volume is more than real gas volume
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+abdul musawir
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+Anuj Prakash
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Excellent explanation and perfect derivation........ How simple vander Waals equation after this Vedio
Little improvement is required . overall is good explanation
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+Dipendra Kumar
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I think your explanation about Vreal is wrong, Don't confuse others,most of them trust your explanation Blindly
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thanks sir or sir please ek video theory of relativity pe bhi bnayiye
11:05 at this timeline... may be a second before or after.. you say that if more number of molecules are able to comtact... or exert pressure this means that the pressure reduction factor is greater.... but shouldn't this be the opposite. ... if more gas molecules are able to exert pressure.. this means that thw gas is closer to being ideal and the pressure reduction factor mist be smaller.
Sir the values of a and b of van der waals equation par ek lecture do pls
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