Ideal Gas Law: Where did R come from?

[@bridgitmfansite]

that sad moment when I just got through reading 12 chaps of chemistry that I BARELY understood, then I come to your channel and I see half of the concepts I struggled with broken down in better terms. Thank U Soo much for you videos! You just save a lot of agony for my final chemistry exam

[@kboylowlu56]

missseventhward I so agreed with you.

[@tdewitt451]

R says that for any sample of gas, if you multiply the pressure and the volume, and then divide by number of moles times the temperature, the number you will get will be 0.0821. ALWAYS. that's the reason the ideal gas law works, because if you have those four quantities (P,V,T,n), you know they HAVE to equal 0.0821 when you divide them out. so if you don't know 1 of them, you can figure it out using the other 3 because you know they have to all equal 0.0821, every single time.

[@rishisingh5449]

We can use 1/12 instead of decimal for calculation 😒😒😒😒😒😒

[@uselessinventor4030]

You are my savior

[@clojcloj]

This video plus the extra explanation in this comment is gonna allow me to steal my professor’s job 🤣

[@maskedmarvyl4774]

You explained this better than my professor did, and explained the usefulness of this ratio clearly. Thank you. If Two of these factors are missing (P, V, n or T), can you still use R to deduce the missing factors, or is it impossible?

[@sergiopabon1387]

You are still helping people in 2020 during the pandemic. This helped a lot.

[@tdewitt451]

It's just a rule. At STP, 1 mole of ANY gas takes of 22.4 L of space. It's just the way it is. But it's only true at STP (1 atm of pressure and 0ºC).

[@chemicalengineeringsaipiri4497]

8.314 jolue /mole Kelvin I explained in channel if you want see it

[@abdullahwarsi7635]

Why is volume not affected by the mass of the molecule?

[@PasajeroDelToro]

@@abdullahwarsi7635 PV=nRT is only an approximation. There's another equation that takes account of 'Van de Waals' interactions between molecules.

[@The_Green_Man_OAP]

1:52 22.4 /273 =0.0820512821 [atm.L/mol.K]. Say this was in atmospheres, then this is about 62.358974 Torr, which is the pressure at about 10.8 miles altitude on Earth. At that altitude, it is about 218 kelvin (-55 deg C) and the temp chart is on a plateau. This is the minimum temp for that. 10.8 miles altitude is in the high cloud zone for the tropics. Those clouds are full of small ice crystals. Maybe R has something to do with state changes for various temps and pressures, and the troposphere boundary layer* in Earth's atmosphere ..?? *(The average height of the troposphere is 18 km =11 mi =59,000 ft in the tropics.)

[@The_Green_Man_OAP]

​@@PasajeroDelToroI don't think that's required here.

[@nioshamajedi4712]

Reading these comments, I realized I’m not the only one struggling with stuff! You need to teach the chemistry professors how to teach chemistry!

[@rachelwalker3017]

Shout out to youtubers from around 10 years ago for teaching me chemistry 😂

[@stephaniepierre11]

lol fr

[@rachelwalker3017]

@@stephaniepierre11 They're real ones ✊

[@tribeking84]

You make chemistry look easy

[@asmodusii7412]

Because it is (said no one ever)

[@krishnannarayanan8819]

Chemistry is easy once you understand it and have a love for it. It is just it can be daunting to look at it as a whole and it can be tedious, especially calculations, at some times.

[@w02skyrocket51]

BROOO you are a life saver holy crap. I understand the whole thing now where I'm comfortable you and it's so relieving you have no idea. No one talks about this when teaching it, not even my professor.

[@tdewitt451]

Hey everyone, I'm here to help. If you have any questions or just want to learn more, click on the link in the description above. It'll take you to a page where you can ask me questions.

[@dr.subratachatterjee8263]

Thanks

[@arpit11996]

I am from India and it's my first comment on any foreign channel you helped me a lot,thank you so much,I needed it much.💞

[@schwalmj]

Thank you Tyler. As a student teacher with rusty chemistry knowledge, your videos are SUPER helpful!!

[@jakeanderson6253]

This was exactly the video i was looking for, thank you!

[@clojcloj]

THANK YOU I’ve been trying to understand R with absolutely no progress until I watched this video

[@38meghamali76]

🙏Sir, your teaching method is so different from others...and it is very easy to understand...I really liked👍... Please keep going 😊

[@reviewsmania1980]

really bestest teacher in the world 💓💓

[@deadlyfati1921]

I love this guy. My chem teacher doesn’t know how to explain

[@gretchenkeith7008]

This blew my mind, made me remember exactly why I love science!

[@33859seveerr]

Excellent preparation and presentation. Born Teacher.

[@jingjang2552]

Thanks, this helps me alot for my homework. you explain perfectly so that I can understand it easily.

[@originterran]

Huge fan brutha; thank you for your instructor-ship!

[@darangza]

Great and easy explanation. Thanks Tyler!

[@med4371]

amazing videos I want to say to you that you super amazing teacher I have seen in my whole life . I wish that you are my teacher and you teach me I am sure that I will get the best markes in the exames thank you 1000000000000000000 time keep going

[@MrAudacious21]

This is absolutely wonderful! Thank you so much! It's much better than just memorizing the constants! Understanding where things come from helps me remember! :) So, thanks!

[@hootie017]

my head just exploded with science. thank you.

[@larbisahli2273]

K is a physical constant relating energy at the individual particle level with temperature. It is the gas constant R divided by the Avogadro constant NA R=k*NA

[@biggerjewels]

You rock man! Keep up the good work and thanks!!!!

[@nathan5055]

thanks. I have you to thank for aceing my chemistry exam

[@FM-do9ee]

very helpful Thank you

[@CaffeineOverFlow_0720]

And plus you can multiply avogadro’s constant with boltzman’s constant. It will give you 8.31

[@ZumbawithAddy]

I think I love you! No.... In fact, I ADORE you! Thank you so much for sharing your knowledge. As Mr. Spreader commented, "You are the BESTEST teacher in the world!"

[@seamonkeymarc]

to reiterate JKeeley's question below...."what does it mean?" Why do we need it in the equation to begin with? I have this vague feeling that it has something to do with the gas not actually being "ideal" in reality. (gas particle collisions are not really inelastic, particles are actually attracted to each other, etc) but I think I may have just made that up in my own mind ;-) I'd really like to know what that little bugger is actually in this equation for?

[@megancooke7592]

Me too :) Or if it wasn't there, what would the difference be? If that makes sense. Not mathematically, obviously, but theoretically.

[@7darksiders]

You are a Saviour my friend

[@yuudesu]

This made me realise that I am a chemistry person more than a math person.

[@Itsgoodtobeyourself]

Sir ideal gass law was discovered earliear than avogadro number then how can they found ideal constant value?

[@lilucky_you]

Thanks a lot! It really helped me! Glad to watch this

[@rajrinku7173]

Nice explanation👍👍🙏🙏

[@bluehong2395]

Thanks for clarifying mate!

[@rudranshvatsa4933]

i have a doubt......it is all perfect about putting the value in pv=nrt and finding the value of r but the value 22.4 L in avogadro's law came by using the value 0.0821 and it is obvious if you keep the place of r wakened and v = 22.4L you'll get the answer.( sorry if i understood wrong plz anybody help me in understanding by clearing it in the comment section. since i am in just 10th class in india (junior) :)

[@shubhamsaxena9976]

Cool explanation

[@adarshkamble007]

Bro it is amazing🤩🤩🤩🤩👌🏻👌🏻

[@musyyabalam2726]

but how did Avogadro get this information?

[@TheHHPodcast]

I love you so much man. Why dont all teachers ask and anser simple question like your and mine: Where did R come from?

[@jamescaldwell8600]

this guy is a legend

[@bubseygames780]

Hello i have one question regarding R. Why we use this R a universal gas constant in electrochemistry. Which is solution chemistry. And this R is for gas i think.

[@nabelanoviandini5599]

Wow, thanks ! it helps me a lot. Can i remake this. Video in my languange?

[@TheWtfareyoulooking]

Sure

[@gayathrianbalagan7130]

Thank u.pls come back.i luv u.respect u.why u stopped making videos.what r u doing.😦😦😦😦😦😦

[@TheEndlessNote]

nice presentation! thank you sir

[@santos9311]

What if you convert mmhg to torr and then to atm? If you always do that, would you only need the first R constant?

[@_perryperry]

is 0.0821 being on the numerator same as it just being beside the fraction? i mostly see it just beside the fraction.

[@brittanyburson]

thank you! was wondering this!

[@dhaccessories]

Wow. Thank you so much!!! I finally get it.

[@mahmoudgaber2244]

excuse me doctor .. do u have any vedio about .. liquefaction of gases and anderew's curves ??! .. and thank u

[@chandanadeeksha5661]

thank you for the video.....this helped me

[@itsruchira]

Wow🔥 subscribed ❤️

[@nataliaheidel4694]

THANK GODDDD my teacher didn't even tell us wtf this was in the equation

[@AnimeFreak9783]

If anyone can answer this, please help: How could R been determined so precise (5 or 6 decimals I guess)? It can't be with this method shown in the video cause every sort of gas has NEARLY (not exact) a volume of 22,4 l at STP (1 mol) so you got different values for R depending on the gas you're using. Even if those values are nearly the same, they are not exact the same so you could have determined R such precise. Where is here the error?

[@EDUARDO12348]

Thanks for upload, very helpful

[@Miskat1211]

Atlast i found it Thanks sir

[@judojim100]

Thank you Tyler!

[@JKeeley4]

What does it actually mean though? Does it measure anything?

[@disappointment8094]

True

[@mzapcupcake4294]

Wait but isn’t Avagadro’s law derived from the ideal gas equation? How can you solve for R using it if that law is derived from R?

[@ss-pw4zj]

I’m a bit confused, I saw on a few places ideal gas has no volume, but this is 22 L

[@Joy-me5gh]

Do I need to convert mmhg to atm like celcius to kelvin?

[@PasajeroDelToro]

Why do some people cite R=8.315 instead of 8.314..(more digits) ?

[@kayceeyang3128]

what is the problem doesn't give you the mole?

[@Annadonia]

Fantastic! Thank you!

[@emmamccoy5440]

what if you need to find the volume or moles instead or R but R isn't provided?

[@kumarbk7918]

R is constant u will have to remember it

[@guenterlohnert780]

This is not at all the answer of “Where did R come from?”. In 0.26 s you state the Gas Law pV= nRT; then you jiggle with this well known equation which already contains R. That’s more than weird. weird !

[@linkster3836]

Is anyone else anoyed that he wrote "times" as a dot the first time and then as a "x" the second time in the final answer?!

[@hamzaahmed9224]

. And x are same thing

[@starrynight5207]

im told to use: .080206 L x atm/mol# can someone explain?

[@shylildude]

why is the volume 22.4 L at STP?

[@moznabagabas6642]

thank you

[@niceguy4801]

Thankyou sir!

[@hi.1095]

this is so weird but your hands are so nice haha

[@BulletBlazerSS]

Excellent

[@adeolabamigboye6767]

You're the best

[@punishmentbegins]

Youre the best!

[@dat078912reppa]

Youre A GOAT

[@incogneat-o6612]

Thank you.

[@deanwkuri5277]

In PNG people you'll be called KING in chem

[@theonewitheverything]

This is genius.

[@funny.kids92]

Thanks sir

[@kellywilson1550]

Thank you

[@adiliraliyev5882]

Brilliant.

[@vegam05]

Thnx ,sir

[@nitindhaka9556]

U r computing the value of R from that law which was even proved by using this value only

[@alainfalode8184]

man thanks so much

[@farhansadikabtahifh-6158]

Thanks.

[@moishie20]

thanks

[@sskhsaini]

thank you 😉

[@rogerg0834]

You rock!! TYVM!!

[@devan7485]

is this the guy from pitched perfect?

[@rishisingh5449]

We can use 1/12 for calculation 😒😒😒🤔🤔🤔🤔

[@rassimsimou1594]

Good

[@ScienceStudyGroup]

awesome!

[@babulal-fv4tl]

👍👍

[@Veersharma627]

N̤i̤c̤e̤

[@siyandambele6679]

YOU ARE A LIFE SAVER Dr.

[@DonLavelle]

Stp is 25C 1atm...he sais 0 C

[@이진희-x5q]

So goddamn helpful

[@crumzbitz7032]

thaaankk youuuuuuuuuuuuuuuuu