Chemistry - Liquids and Solids (54 of 59) Phase Change: Critical Temperature and Pressure

[@pazgonzalez7677]

Not all the heroes wear capes. Thanks!

[@misssweethearted]

Wow thank you so much, I looked at so many different sources and had trouble understanding it but the minute I watched your video BOOM I now finally understand what critical temperature is. :-)

[@jimkeller3868]

The clearest explanation of the reason for the critical point I have found.

[@prekshitparakh8977]

true that!

[@kouroshshafiei8895]

same exact here. watched dozen video and this was the best

[@paulsmith1903]

Thank you for this and your other videos that help me to understand certain things from fluid mechanics and thermodynamics better than the explanation from my professors or books. Greetings from the Czech Republic.

[@MichelvanBiezen]

Welcome to the channel! Glad you found the videos.

[@bigheadface]

Thank you! My textbook did a horrible job of explaining this concept. You cleared it all up in 5 minutes.

[@ahsansiddiqui271]

Simple, clear, and easy explanation. Got every single word you delivered.

[@mollypete4270]

THANK YOU. I literally watched every other video on youtube to understand this concept, should've came here first!

[@kouroshshafiei8895]

thats what I was looking for.good simple explanation. thanks

[@nonsougwuja1180]

Such a clear explanation! Thank you 🥹🤲🏽

[@MichelvanBiezen]

Glad it was helpful!

[@ag6981]

Thank you! Keep up the great work, very much appreciated!

[@arbaansyah9248]

Excellent explanation, thank you

[@citrarizqin]

Thank you so much for the very clear explanation, sir!

[@MichelvanBiezen]

You are welcome! Glad you found it helpoful.

[@arocina1]

where do you get the number is there any table to read critical temp. and pressure??

[@MichelvanBiezen]

You can find these on the internet or in text books.

[@JohnnyJr396]

Can the ideal gas law be used when a gas is passed its critical point? I’ve seen problems with propane as a propellant and the ideal gas law was used to find answers to questions about the propane. But in a propane tank for a gas grill tank the law can’t be used

[@brandonflores4]

Amazing job explaining everything.

[@krishankant5289]

crystal clear now😀🙏

[@monalidutta3417]

So pressure has to be more than Pc to liquify a vapour?

[@fernandosiqueira9893]

Very clear and straightforward explanation. Thank you so much

[@MichelvanBiezen]

Glad it was helpful!

[@prekshitparakh8977]

well explained!!...thank you!

[@hamadaly458]

good job sir ! thank you for the explanation 🙏🏻

[@MichelvanBiezen]

Most welcome!

[@harshalgajjar]

Excellent explanation

[@alicelestrange3308]

Thank you❤

[@MichelvanBiezen]

You are welcome.

[@3636cnu]

To the point...

[@evisxm]

Thank you sir!

[@MichelvanBiezen]

You are welcome! Glad you liked it.

[@wyomingcreations8824]

So what if its already a liquid. if the volume can somehow be maintained the temperature would be irrelevant?

[@ComandaKronikk]

dude that bow tie is fkn VIP ballin hard! also good explanation

[@felwaalarwan5234]

Thank you

[@napoleon_bonaparte2462]

I think it's nice to have a simple reference for how big these pressures are, like your car tires are probably contain about 1.7 atm of pressure. And as far as I can tell, the average aerosol spray can can be about 7 atm - not sure if the value I found is a gauge pressure or not, if it is, then it would be more like 8 atm. edit: I just calculated that my 400g propane bottle was originally stored at ~2.4 atm of pressure.

[@MichelvanBiezen]

Usually when they talk about tire pressure or pressure inside a can they are talking about GAUGE pressure.

[@napoleon_bonaparte2462]

I'm accounting for that.

[@Th3CuriousGeorgE]

i always come to your videos for the past couple of years whenever im stuck. cheers.

[@MichelvanBiezen]

Great feedback. Thank you.

[@gelomelo3426]

Hi sir, I really really appreciat you for your awesome video. You are definitely a legend 🌹💗 Sir could I ask a question pls? Assume a plastic bottle of Pepsi, when you open the bottle, you see something like a white gas on the surface of the liquid. It is bc when you open the bottle suddenly, bc it's fast, so the process would be adiabatic. During an adiabatic process, pressure decreases, temperature decreases. The result of reduction of temperature, gas on the surface condenses and turns to liquid. And the white gas is drops of liquifed gas. I mean in an adiabatic process, liquifed happens when pressure and temperature reduce. But why in a phase diagram P-T diagram, three phase diagram, liquifed happens when pressure increases and liquifed happens under compressing? I hope I could've told you what do I mean.😊 Sir thank you so much and I really love you from the bottom of my heart.

[@MichelvanBiezen]

I would not call opening a coke bottle an adiabatic process

[@gelomelo3426]

@@MichelvanBiezen sir I really believe in you. So I need to search and study more about it. And I said that, bc our teacher said any fast process, not enough time to transfer heat, is an adiabatic process. So when you open the bottle of coke, just bc the gas expands suddenly and fast, the process is adiabatic. Pressure and temperature decrease and gas turn to microscopic drops of liquid. It was all he said in class. But sir i really believe in you and I'm sure you are definitely right. So I try to search more and understand why isn't that process adiabatic. Thank you so much and I really appreciate your comment. 💗🌹

[@timday-smith4925]

3:26 if u need that math 2 add up cuh

[@navaniganavaneethan3152]

நன்றி

[@felixsanchez2143]

Nice

[@jaleelbarnes7142]

Yessir

[@MichelvanBiezen]

Glad you liked it.

[@chrismusix5669]

Let's make some liquid Sun! :3

[@HopeFulWiseMan]

Thank you❤

[@thechildhood3271]

Thank you

[@MichelvanBiezen]

You are welcome.