This dude can always explain things better and faster than the instructor and multiple TAs together can, this cleared up like five absolutely terrible lectures of confusion in a fraction of the time.
In fact, at 13:50, instead of trying to find of n value from the PV = nRT formula, you could just have put the P.V to the place of nRT on the W = n.R.T.ln[Vf/Vo] . if you had put PV to the place of nRT in the work formula, it would have been W = P . V . ln [Vf/Vo] . That formula would give same result for the work, and would be less effortless.
"Less effortless" as in "more work"? Lol These diagrams show while we can have a clear understanding of work done and heat transferred, we still need to account for time and sequence. Is there no graphical method of showing the rate of energy flow?
You really are a life saver. Can’t thank you enough. A moment ago i was cursing my memory. After watching this now its a piece of cake. All thanks to you. Keep up! Thank you again.
In problem 6 at around 12:00 I think the answer is wrong. Not sure if someone mentioned that before. "A gas is compressed from 0.01 m^3 to 0.10 m^3" But point A is at 0.10 and point B is that 0.01, but it should be the other way around
How I study: watch lecture slide just to see the boundaries of content then BOOOM, run to JG. I didn't even bother buying textbooks coz this guy is everything.
So we are paying thousands of dollars of tuition to our universities for that one piece of paper they give us when we graduate, we should've paid this guy when he helps us a lot more in a 20 minute video than what our professors do for the length of a whole semester at universities.
Question 6 description needs to be corrected to indicate the gas compressed from 0.10. Similarly, expands isothermally back to 0.10. Otherwise very well explained.
Don’t know what the chances are that you’ll respond but fingers crossed. For Question 6 is A -> B not supposed to be 0.01 to 0.10 as stated in the question? I see the arrow pointing the other way and A and B inverted in graph. I’m not sure. But I also realized that you can’t “compress” from 0,01 to 0,10 (higher to lower) soooo maybe it’s the question..okay never mind. Thanks🤦🏽♀️
This may be that Im wrong, but shouldn't the overall work be negative? because fro A->D volume is decreasing and it was the smaller area under the curve. If the volume is decreasing that means that the environment is doing work on the system so Work is (+). But for B->C the volume is increasing- meaning the system is doing work on the environment in order to expand. If the system is doing work then work is leaving the system making Work (-). Because B->C has a bigger area under the curve the total work should be negative. I think you missed that because W=-PDV but you wrote W=PDV. If i'm wrong then just forget what I said haha
I actually agree Lauren. I had the same confusion so I'm thinking he used different conventions for the signs maybe...Maybe he considered work done by the system as positive. So we actually have to reverse his conventions to get ours
During the isochoric process, when pressure is decreased from 4 atm to 2 atm, why is the volume of the gas not increased according to Boyle's law? I mean, how is this process done physically?
basically work done by each individual process is the area occupied by it. If you extend A and C downward you will see a geometrical figure which is a trapezium. Its area can be calculated directly or you can just sum the area occupied by the rectangle and that of the right triangle(recommended). When you will sum these you will get this result
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Exactly
@Eden Justin shut the fuck up
@@baraaahmad7738 damn that's rude...oh did he delete the comment?😂
@@ayemarasool5120 he deleted
As if you know 🤲
You have no idea how many people you have helped graduate.....thank u so much and may God bless you
This dude can always explain things better and faster than the instructor and multiple TAs together can, this cleared up like five absolutely terrible lectures of confusion in a fraction of the time.
You have no idea how useful your channel proves to me..... can’t thank you enough!
give him a donation! better than paying your teacher or a tutor for sure
How come students pay it
Anyways reminding them that they r doing a great job for us may also bring a wider smile
You are welcome
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Your teacher would have told you
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In fact, at 13:50, instead of trying to find of n value from the PV = nRT formula, you could just have put the P.V to the place of nRT on the W = n.R.T.ln[Vf/Vo] . if you had put PV to the place of nRT in the work formula, it would have been W = P . V . ln [Vf/Vo] . That formula would give same result for the work, and would be less effortless.
Thank you
* more effortless
Thank you
"Less effortless" as in "more work"? Lol
These diagrams show while we can have a clear understanding of work done and heat transferred, we still need to account for time and sequence. Is there no graphical method of showing the rate of energy flow?
You really are a life saver. Can’t thank you enough. A moment ago i was cursing my memory. After watching this now its a piece of cake. All thanks to you. Keep up! Thank you again.
I had fun working out the problems when you explained them. Thank you
Thank u sir I have never seen a generous person like u
Abuubakar Hassan ua-cam.com/video/C7jA08gpNMc/v-deo.html Atomic Structure Trick
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In problem 6 at around 12:00 I think the answer is wrong. Not sure if someone mentioned that before. "A gas is compressed from 0.01 m^3 to 0.10 m^3" But point A is at 0.10 and point B is that 0.01, but it should be the other way around
The pv diagram should have been an inverted one from this
You just brighten up my day that was seeming frustrating because I couldn't get what I was reading. Thank you a bunch
You are a gift, this is so helpful on my olympiad journey, thanks!
You good sir are a uni students saviours for understanding key concepts. You are timeless. Thank you for your sacrifice.
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You r the real God! Love from India!!
How I study: watch lecture slide just to see the boundaries of content then BOOOM, run to JG. I didn't even bother buying textbooks coz this guy is everything.
Very Very Helpful video bro.. Lots of love and respect from india💝🙏👍
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Really u are a good mentor . This really helped me in final exams. Thanks from India 🐯🐯🐯👍👍👍😃😃😃
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Channel name:
The Organic Chemistry Tutor
content: everything..........
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So we are paying thousands of dollars of tuition to our universities for that one piece of paper they give us when we graduate, we should've paid this guy when he helps us a lot more in a 20 minute video than what our professors do for the length of a whole semester at universities.
Great video! It helped me a lot.
Btw, what equipement are you using to write? A drawing tablet?
yes.
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Great explanation.
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In 3rd sum ( 4:36 ) ,
why PV is Not equal NRT
P1V1 = P2V2 = 6*3 = 9*2 = 18 atm L
= 18 * 101.3
= 1823 J
NRT = 5*8.3145*400 = 16629 J
umm
As always, thanks!
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I love you you always save me 😞💓
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Such a good one
Thanks again man. Why do I feel so confused doing this stuff though? Simple things like Work done ON the gas vs work done BY the gas, gets me tripping
Thanks sir, It helped me a lot 🙏👍
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Question 6 description needs to be corrected to indicate the gas compressed from 0.10. Similarly, expands isothermally back to 0.10. Otherwise very well explained.
Thank you so much for this
W = -p(deltaV) for isobaric P is constant
yea , but the guy above isn't using minus sign there 🤨
That's for chemistry
i have a quiz in 20 minutes thank goodness this video is 20 minutes long
The work law is -PdV. The sign convention for a system.
Make a video on how to find change in internal energy on pv graph
Its was a nice video
THANKS A LOT !!
פשוט מדהים
great video, i think tge question #6 on the direction of volume should be oppsosite
you're an ANGEL
Don’t know what the chances are that you’ll respond but fingers crossed. For Question 6 is A -> B not supposed to be 0.01 to 0.10 as stated in the question? I see the arrow pointing the other way and A and B inverted in graph. I’m not sure. But I also realized that you can’t “compress” from 0,01 to 0,10 (higher to lower) soooo maybe it’s the question..okay never mind. Thanks🤦🏽♀️
In question, he inverted values
18:25 why average pressure..?
thanks, this help so much
Sir....i have a doubt....if clockwise....sign is negative or positive...mY teacher said that if anticlockwise work done is positive?plz reply
This may be that Im wrong, but shouldn't the overall work be negative? because fro A->D volume is decreasing and it was the smaller area under the curve. If the volume is decreasing that means that the environment is doing work on the system so Work is (+). But for B->C the volume is increasing- meaning the system is doing work on the environment in order to expand. If the system is doing work then work is leaving the system making Work (-). Because B->C has a bigger area under the curve the total work should be negative. I think you missed that because W=-PDV but you wrote W=PDV. If i'm wrong then just forget what I said haha
I actually agree Lauren. I had the same confusion so I'm thinking he used different conventions for the signs maybe...Maybe he considered work done by the system as positive. So we actually have to reverse his conventions to get ours
Is there a video of thermodynamics for chemistry because the workdone signs is different in Chemistry
During the isochoric process, when pressure is decreased from 4 atm to 2 atm, why is the volume of the gas not increased according to Boyle's law? I mean, how is this process done physically?
@The Organic Chemistry Tutor with the example at 4:33 there is no need to convert the volume unit to m3? Because the SI unit for volume is m3.
12:29 I think in problem 6 the P-V diagram is wrong.
THANKYOU!
Thanks 🌸
Did you miss negative sign for work done due to expansion in the 3rd problem?
🎉❤ thanks a lot 👍😊👍👍👍
18:30 can anyone explain why pressure are added?
basically work done by each individual process is the area occupied by it. If you extend A and C downward you will see a geometrical figure which is a trapezium. Its area can be calculated directly or you can just sum the area occupied by the rectangle and that of the right triangle(recommended). When you will sum these you will get this result
@@ahmedbilal9553 got it. Thanks
hello! i know im late to the party but arent u supposed to use R= 0.08214 if the pressure = atm, and volume = litres?
nah if we wanna calculate the work done in joules we take R=8.3 and for calories we take R=2
i know im late but better late than never
Thank love from Bangladeah
Very helpful
In problem 7, while calculating the work from C to A, why have we used 1/2[Po+Pf] delV ? Why not nRTln [Vf/Vo] ?
Wonderful
I had to rewind like 5 times to understand what he means with "liff"... I have never seen someone pronounce length that way. Great video though!
why clockwise and anticlockwise direction make the work done positive and negative work?
It is prooved in the example at 9:03. Sum of individual cycles is coming positive which is same as that by direct calculation
Thank u so much sir.
I’m so mad I didn’t watch this video before my physics test rip
Which app you use to make such videos?