Isothermal process Thermodynamics - Work, Heat & Internal Energy, PV Diagrams

No video

Isothermal process Thermodynamics - Work, Heat & Internal Energy, PV Diagrams

Рет қаралды 209,571

Күн бұрын

This physics video tutorial provides a basic introduction into isothermal processes. It explains how to calculate the work performed by a gas during an isothermal expansion and how to determine the heat energy transferred as well as the change in the internal energy of the system. This video explains how to use calculus to derive the formula to calculate the work done by a gas during an isothermal expansion. This video also includes the PV diagram of an isothermal process as well as plenty of examples and practice problems.
Open Vs Closed Vs Isolated System:
• Open System, Closed Sy...
First Law of Thermodynamics:
• First Law of Thermodyn...
Isobaric Process:
• Isobaric Process Therm...
Isochoric Process:
• Isochoric Process Ther...
Internal Energy of an Ideal Gas:
• Internal Energy of an ...
_________________________
Adiabatic Process:
• Adiabatic Process - Wo...
PV Diagrams:
• PV Diagrams, How To Ca...
Thermodynamics Review:
• Thermodynamics, PV Dia...
2nd Law of Thermodynamics:
• Second Law of Thermody...
Heat Engines:
• Heat Engines, Thermal ...
Converting Heat Into Electricity:
• Thermodynamics - Conve...
________________________
Carnot Cycle:
• Carnot Cycle & Heat En...
Otto Cycle:
• Otto Cycle of Internal...
Refrigerators and Heat Pumps:
• Refrigerators, Heat Pu...
Entropy:
• Entropy Change For Mel...
Heat Engines and Refrigerators Review:
• Carnot Heat Engines, E...
Physics PDF Worksheets:
www.video-tuto...

Пікірлер: 74

@TheOrganicChemistryTutor 7 ай бұрын

Final Exams and Video Playlists: www.video-tutor.net/

@redmonika9187 2 жыл бұрын

every single time, I come here panicking cause I don't understand what the question is asking off me, and every single time you never fail to be exactly what I need. Honestly I probably owe so much of my degree to these videos. This video is like 4 years old now so I doubt you'll see this, but I'm genuinely so glad for your work and effort. Thank you so much.

@joanyoon4672 2 жыл бұрын

Yes, this presenter has contributed to educating science which is very difficult topic to teach.

@michaelellis2227 3 жыл бұрын

I stared at my homework/notes for nearly an hour without progress. One minute into this video answered my question. This man is a legend.

@julianjoseph5033 2 жыл бұрын

I don't think this man knows how much I love him.

@alejskates2287 5 жыл бұрын

1:30 am and I'm watching this to help me with my physics homework and its not even due tomorrow, or better said, today Sunday. Physics rules. Thank you.

@LOLXDLOL838 4 жыл бұрын

Isnt that supposed to be -12,233 J? because it is done by the gas? and isothermal expansion is always w

@tozaisusovac6842 2 жыл бұрын

Yeah in my textbook W= - p dV

@hazimrassam9389 2 жыл бұрын

No, the sign notation changes when you're doing physics or chemistry. Watch this video kzfaq.info/get/bejne/hN9_jLphnJOwZZs.html

@emmanuelotieku6061 Жыл бұрын

I was confused from that side

@eraofworriers2727 Жыл бұрын

Exactly true;that work is supposed to be negative since it is being done by the system which would be the opposite of it was the sorrounding performing work against the system!

@sameer9839 2 жыл бұрын

The professors should learn from you

@ladybuglll4647 6 жыл бұрын

Hi there. I always watch all your videos and I appreciate your hard working. All of videos are so helpful. I have a question, do you also do biochemistry?

@heavenskyclouds4480 9 ай бұрын

why is the value of R in the first question is 8.3145 instead of 0.08206 L•atm/mol•k?

@skuller0325 6 ай бұрын

yea , how to know when to use which value...?

@arycogito 3 ай бұрын

i think its because the ratio of [Vf/Vo] will be the same even if they are converted into m^3 since the liters would have been divided by 1000 to convert it to m^3, so it would have cancelled out, so it doesnt matter if they are in liters or meter cube. but the 8.314 constant is a must for calculating joules so that is indispensable, but that's just what i speculate

@tsoojbaterdene7793 4 жыл бұрын

THANK YOU SO MUCH.GOD BLESS YOU😍😘🤗😄😀😁😊♥

@nathan8472 3 жыл бұрын

thanks babe

@omaralmhtachem9284 2 жыл бұрын

Thank You

@lagharijaleel 3 жыл бұрын

VERY GOOD LECTURE

@thekelvins3456 2 жыл бұрын

Good work Mr sir

@chiranjali8850 6 жыл бұрын

the sign conventions are opposite in chemistry. expansion work is negative n compression is + 've. dU = q + w. using ur conventions ans is coming wrong sir.

@taylorinase8094 5 жыл бұрын

Correct for chemistry, however this video is addressing thermodynamic processes, which rely on a physics basis

@Dina-he1uc 3 жыл бұрын

he clearly states in the description that its a physics video.

@alnajah6750 3 жыл бұрын

@PRAVEEN TOMAR So,, chemistry and physic is different in the sign?? I'm studying chemistry,,but the sign is different..!!

@nickoemmanuelvillacruz3090 3 жыл бұрын

@@alnajah6750 they have different perspective chemistry perspective is surrounding physics perspective is system

@jaceygee 4 жыл бұрын

Curious about when you used deltaU=nCvdeltaT...why would you state constant V when it is expanding from 3L to 8 L? Thanks

@xahidhasan8877 4 жыл бұрын

According to the first law of thermodynamics, Q=dU+W Q=Heat supply on the system or heat lost from the system dU= Change of internal energy (Increase or decrease) W=Work done by the system or done on the system Internal energy depends on the change in temperature and work done depends on the change in volume... That means if we increase the volume of a system and with the increment of volume temperature falls that means temperature changes... So, here two things occur, work done and internal energy change... Now come to the question, in the above problem, temperature is constant..As temperature changes, internal energy changes... No temperature change, so internal energy change zero... As volume changes, so here only work done... Q=dU+W Q=0+W Q=W=nRT[ln(V2)-ln(V1)] Thank you...

@vihangitanya3620 3 жыл бұрын

Thank you so much 👌

@Vyantri 6 жыл бұрын

Absolutely beautiful. Thank you.

@aldanadagimpaulos7511 3 жыл бұрын

tnx sir that was very helpful

@parterintalamiajoshua8148 9 ай бұрын

goodwork sir,i really appreciate your work

@beckylsquigly3741 6 ай бұрын

Ive just realized this is more of physics and not chemistry since the negative and positive signs will differ

@ObedAdi-wd3yl 4 ай бұрын

Now give bro his Nobel prize 😂🎉❤

@tolooklikeyou 7 ай бұрын

God bless you

@AmitAggarwalBusinessInHindi 4 жыл бұрын

Thanks you bro........

@akimminavarro278 5 жыл бұрын

shouldnt work for compression bbe positive

@derrickzulu159 5 жыл бұрын

u are really helping man

@johnwhite7700 4 жыл бұрын

haw can u wrait in such fuked manner?

@anchorproductions121 10 ай бұрын

I don't understand how the work done formula is +ve As work done is done by the system, shouldn't it have -ve sign Please explain 🙏

@abdulatefmohammed1501 4 ай бұрын

what if we do not have gas and we have i liquid for example what equation we need ?

@lucsurette4519 5 жыл бұрын

does it matter that the pressure is not constant? W=integral(PdV) so wouldnt W=nRTln(v2/v1) only hold true if the P could be pulled out of the integral?

@hisyamhasbi8257 4 жыл бұрын

Have you found the anwer man? Asking for a friend

@hisyamhasbi8257 4 жыл бұрын

Nevermind, i guess it makes sense now, he was pulling out the nrt which is constant, not p ^^

@nellvincervantes3223 4 жыл бұрын

PV = nrT W = integral(PdV) P = nrT/V W = nrT*integral(dV/V) from V1 to V2 W = nrT(lnV2 - lnV1)

@makaranddeshmukh1015 5 ай бұрын

In 2nd question gas is being compressed meaning work is being done on gas so W should be positive right? and in 1st question gas is doing the work so W should be negative. Can anyone explain me why? Or is he referring surrounding for symbols and not system. @ThrOrganicChemistryTutor

@pengaylakwatsa8009 2 ай бұрын

where is the ISOTHERMAL COMPRESSION FORMULA IN HERE?

@jonalynrabot6031 2 жыл бұрын

May I ask how you arrived in your answer at your problem 1 letter b. Thank you.

@boundlessgaming6545 Жыл бұрын

1:13 i thought when w is done by the gas w is negative

@poppylanuwu Жыл бұрын

In physics (we want the system to work for us) Wd by the system (gas) +ve Wd on the system -ve In chemistry (we want to do work on the system ) Wd by the system(gas) -ve Wd on the system +ve

@boundlessgaming6545 Жыл бұрын

@@poppylanuwu ahhh

@diggietheowl 9 ай бұрын

Guys I need help what math process he used in 2:21 and he get 12,233?

@MrYahya0101 2 жыл бұрын

I don't see how you can find that W=Integral(P*dV) where P is Constant. And then when you find W=nRTln(Vf/Vi), you assume P is not constant and substitute in Pi/Pf. If P is constant, how can you substitute in Pi/Pf?

@markos0001 3 жыл бұрын

How do you find work in an isothermal process if temperature is not known

@karolainecurvo6040 5 жыл бұрын

Você é especial, muito obrigado!!

@qw1105 Жыл бұрын

The result in here 5:00 is not correct? I calculated it and this result appeared(5820.15)

@qw1105 Жыл бұрын

pls tell me how did you calculate q2 4:36 😥its only positive

@engkarar5057 3 жыл бұрын

جميل Nice

@amstrongawase6853 Жыл бұрын

I don't understand how you calculated question two 😓

@kemiesontompong5067 3 жыл бұрын

for the answer of number 1, it is not 12,233J sir, its 12,388J?

@Zahra-dj6cc 3 жыл бұрын

But why didn’t you convert the kelvin to Celsius ???

@annabumseng1964 3 жыл бұрын

Kelvin is the ultimate unit for temperature hence no need for conversion.

@rafal6016 Жыл бұрын

I don't know why but reading course materials doesn't stick to me. After watching once your video I understand most of it.

@amstrongawase6853 Жыл бұрын

Help me ask him I don't understand also my answer is different

@gallanosamerlindag.6795 2 жыл бұрын

What if there is no mole?

@anilsharma-ev2my 4 жыл бұрын

Use hc/λ = nRT. Do it correctly Next Nobel Prize is 20 50 30

@Nick2014B 2 жыл бұрын

Remember this is opposite work if you are studying for p chem

@tamilselvan.s0469 3 жыл бұрын

If moles were not given how to find no of moles here using given conditions

@MinhNguyen-xn7ol 2 жыл бұрын

it's so strange, the temperature is not change but Q is not equal 0

@rikge Жыл бұрын

What is the use of studying those things if everyone s not gonna be scientist

@anilsharma-ev2my 4 жыл бұрын

Please findout actual work done by an aneroid barometer in joules per unit volume changing For actual model. Of an aneroid barometer made of nispan metal cell cylinder ? For one year In joules ?? Please Please Please