What's the Difference Between Molarity and Molality?

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  • Опубликовано: 10 янв 2025

Комментарии • 260

  • @tdewitt451
    @tdewitt451  12 лет назад +76

    thanks so much for your kind comment! i'm very busy and can't promise that i'll make videos on certain topics, but i always consider requests when i'm deciding what topics to address. so please let me know what might be helpful for you to see.

  • @aklilue1941
    @aklilue1941 8 лет назад +138

    Hey Tyler, I created an account just to tell you this. I have been reading about mole (your other video) and molarity and molality for more than 20 years (I am a physician). I never had it explained this easy. You are awesome!!

    • @cloutgangster
      @cloutgangster 5 лет назад +1

      Aklilu T/Michael I am also a Doctor 👨🏽‍⚕️

    • @xyle5135
      @xyle5135 4 года назад +1

      @@cloutgangster I'm doctor octopus

    • @tragedy2722
      @tragedy2722 3 года назад +1

      @@cloutgangster stop capping

  • @lindsaywright3665
    @lindsaywright3665 11 лет назад +449

    i think my teacher needs to watch this video

  • @theultimatereductionist7592
    @theultimatereductionist7592 5 лет назад +19

    RUclips: NEVER TAKE DOWN THIS VERY CLEAR & IMPORTANT VIDEO!

  • @myriamkass4345
    @myriamkass4345 4 года назад +7

    Tyler,
    I want to thank you in name of all my students for your great videos. Our school, like most high schools, had to go to distance learning during this corona virus pandemic. While preparing my lessons I was so happy I could depend on your videos for excellent instruction.
    You always explain concepts so well and detailed that I feel my students will have an excellent foundation for their future chemistry classes .

  • @AVTR15
    @AVTR15 Год назад +3

    Clearest definition of Molarity and Molality I've found! The visuals help so much

  • @joshbullis2322
    @joshbullis2322 7 лет назад +14

    Tyler, you are the best Chemistry teacher! I'm doing well in my Chemistry class thanks to your videos.

  • @tdewitt451
    @tdewitt451  12 лет назад +4

    Yes, you're absolutely right. But usually that difference is so small that it doesn't matter, even in solvents of different densities. The one situation where it does really start to matter is in solutions that have a very high concentration of solute, so if you're dissolving a whole ton of something into a solvent, then that can really start to add up.

  • @tdewitt451
    @tdewitt451  11 лет назад +2

    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.

  • @audreyandremington5265
    @audreyandremington5265 6 лет назад +17

    3:48 - 3:49 That's what I was thinking in chemistry class, and that is why I have to watch this video.

  • @novaop7776
    @novaop7776 6 лет назад +3

    Been subscribed to you for so long now, I've stopped since my A-levels but I'm preparing for a prelim test and I'm recapping. Thank you so much for the videos you've posted. You've got a knack for teaching!

  • @anwarsadath9177
    @anwarsadath9177 4 года назад +4

    I dunno how he can be so incredibly a great teacher

  • @vsanabria2
    @vsanabria2 10 лет назад +17

    Your a wonderful instructor, professors should watch your videos and learn from you so they can teach better. Thanks for
    breaking it down and making it simply =)

  • @Oldmanflyfishing
    @Oldmanflyfishing 3 года назад +2

    Tyler, thank you so much for your channel. I am a mature student that is trying to upgrade his high school credits online, through community college. If it wasn't for you doing this channel, I would NEVER have been successful, I owe you a great deal of thanks.

  • @kanchisoni36
    @kanchisoni36 10 лет назад +23

    This guy....is saving my life...this and the gas laws and all that...helping me for passing the exams...Thanks a lot! :)
    But which is greater...Molaltiy or Molarity?

    • @niggamog_69
      @niggamog_69 6 лет назад +2

      Molality does not change with temperature but molarity does

    • @srirampatnaik9164
      @srirampatnaik9164 3 года назад

      Shouldn't it depend on the density of solution and solvent?

    • @WhenCatPlayz
      @WhenCatPlayz 8 месяцев назад

      @@srirampatnaik9164 no it depends on volume

  • @saltech2024
    @saltech2024 3 года назад

    I've never seen such a tutor....
    This guy is a genius

  • @runetude4406
    @runetude4406 9 лет назад +224

    but then what's morality !???

    • @greengleek43v3r
      @greengleek43v3r 9 лет назад +44

      runetude i don't know why but this comment gives me life

    • @gnuPirate
      @gnuPirate 8 лет назад +37

      :
      The amount of unnecessary prejudices and superstitions one has acquired [on top of obvious basic decency ]
      / per unit of brain matter
      ...[ ? ] possibly.
      This ratio is expressed in arrogance and measured in dB.

    • @nabeelm358
      @nabeelm358 7 лет назад +1

      LOL!!

    • @jiedengyuewo7169
      @jiedengyuewo7169 7 лет назад

      hahahaha!!

    • @jiedengyuewo7169
      @jiedengyuewo7169 7 лет назад

      Beautiful!! xD xD

  • @jessicazwilling7456
    @jessicazwilling7456 7 лет назад +2

    You are my Chem savior! My college professor's explanation was not even close to yours. You should host lectures where you teach professors HOW to teach these topics.

  • @jasonwu4434
    @jasonwu4434 9 лет назад +5

    Exceptional explanation. It made things very clear.

  • @owner099
    @owner099 11 месяцев назад +1

    even ur eleven year old vid is better than my teacher explaining 3hrs for this simple topic in this era of digital board and facility (i wish ur were born in india )

  • @EH_888
    @EH_888 5 лет назад

    Thank you so much for explaining the significance and differences between molality and molarity. Very often do instructors tell you to simply "plug the numbers into the formula". However, it is so much better to have access to a more thorough explanation.

  • @rauandabdullah8253
    @rauandabdullah8253 12 лет назад +1

    Hi, i just wanted to say that i seriously love your videos and i was worried that you had stopped making them because i hadn't seen any videos pop up in my homepage for ages! I am in a vital year at school this year and you made this video just in time! please reply to my message so i know you have actually read it because i have a few requests if it were possible for you to do.

  • @amun6416
    @amun6416 10 лет назад +20

    I FUCKING LOVE THIS GUY

  • @bhaibhabhi8569
    @bhaibhabhi8569 8 лет назад +1

    your lectures are conceptual & easy to understand.

  • @anupamasingh9738
    @anupamasingh9738 Год назад +1

    Best until today 🤗

  • @ayame316
    @ayame316 5 лет назад

    You explain this so well, but what’s also nice is your voice is clear and easy to follow. For English speaking people, that is.😁

  • @elangz9201
    @elangz9201 7 лет назад +1

    one more thing, the reason some chemical equation preferred molal over molarity is that molality wont be effected by the temperature. the heat that is generated towards the solution will make it's molecules expanding therefore the volume increased, but the mass remains the same

  • @GB-yq6nr
    @GB-yq6nr 7 лет назад +2

    your videos helped me so much to understand chemistry

  • @zainalilaghari4191
    @zainalilaghari4191 7 лет назад +1

    Sir you are the best teacher.👍

  • @nidafatima5589
    @nidafatima5589 2 года назад +1

    Your video helped me so much
    you're really good instructor and professor 👍🏻

  • @carlisefarren4236
    @carlisefarren4236 2 года назад +1

    Excellent!, Chef Kiss🤌. Thank you

  • @ngm6541
    @ngm6541 9 лет назад +45

    can you please make a video about Normality?

    • @shayanyadegari811
      @shayanyadegari811 6 лет назад +2

      I asked him the same in other video :D so 2 votes !

    • @ayame316
      @ayame316 5 лет назад +1

      Yes yes an English video about normality pleeeeeese!

    • @spicasusl3
      @spicasusl3 5 лет назад

      being normal is incredibly overrated tho.

  • @fed_eric
    @fed_eric 10 месяцев назад +1

    Been encountering this lesson in junior high, in senior high. I'm now in college and here i am again lol

    • @painlxrd4256
      @painlxrd4256 10 месяцев назад

      same, got my uni entrance exam tomorrow 😹 learned this in 10th grade

  • @patricknein9062
    @patricknein9062 7 лет назад

    The Chemistry God puts out another great video.

  • @bonganemathebula7556
    @bonganemathebula7556 4 года назад

    The most underrated channel

  • @291ayl
    @291ayl 5 лет назад

    OMG, Seriously THANK YOU!!!! I kept telling everyone that wouldn't the total amount of solute and solvent change btwn Molarity and Molality... everyone kept looking at me cross-eyed, that is until I found your video!!! THANK YOU

  • @anushiagrawal2103
    @anushiagrawal2103 5 лет назад

    Crystal clear explanation... Go for it guys if u wanna clear your concepts

  • @vasantgphadke
    @vasantgphadke 11 лет назад

    Only good teacher can teach like this

  • @josephmendez29
    @josephmendez29 4 года назад

    the best youbteacher in the planet!

  • @voldermortriddle6767
    @voldermortriddle6767 6 лет назад

    Thank god, your a blessing man I was struggling on my ap chem work and because of you it’s easy

  • @taibahaldakhil4684
    @taibahaldakhil4684 8 лет назад +1

    ur teaching is very easy to understand! LIKE!

  • @tamannarana8218
    @tamannarana8218 4 года назад

    Idk why u are not making more videos.. But u are amazing.

  • @mashroom2927
    @mashroom2927 3 года назад +1

    That was so easy and understandable tysm 🍮

  • @praktanpulekar9198
    @praktanpulekar9198 4 года назад

    from 2020 and still love this video

  • @AnkushSharma-zv5hv
    @AnkushSharma-zv5hv 7 лет назад

    world need more people like you

  • @hermitcard4494
    @hermitcard4494 3 года назад +2

    Damn you scientists for SUCKING at naming things.
    My turn:
    Moles Solute / Liters of Solution = MoLiSol. MolaLi. MolaLity. MolSolurity
    Moles Solute / Kilograms of Solvent = MolGraSol. MolaKi. MoGrarity. MolSolvency.
    My names have CLEAR OBVIOUS differences to avoid any confusion, and are related to what they mean.

  • @LakmalSajith
    @LakmalSajith 4 года назад +1

    I really love the way you teach!!❤❤❤

  • @johnpatrick3997
    @johnpatrick3997 7 лет назад

    Give this guy a medal

  • @rauandabdullah8253
    @rauandabdullah8253 12 лет назад

    Thank you so much for replying I understand you may be very busy but these are just a few requests if it were possible for you to do a couple or even one
    - solutions; suspensions; colloids
    - saturated, unsaturated and supersaturated solutions
    - Henry's law
    - Enthalpies of solution
    This is where we have studied up to and I know that there are many videos out there on these topics but i fail to understand them or my school teacher as much as i understand you! Thanks again for taking time to reply

  • @pt_2003
    @pt_2003 5 лет назад

    Something which can be explained so easily with the help of examples, is made so much difficult by my stupid teacher....Thank you! Your videos are life saver

  • @preetiarora3428
    @preetiarora3428 6 лет назад +2

    Please make a video on Normality, Equivalent Weight and n factor. Thank you for the interesting videos that you make.

  • @jatingarg546
    @jatingarg546 7 лет назад

    Bro, I liked your work.
    I was unable to understand this concept but after watching your video its simple for me now.
    Thanks a lot and by the way I am From INDIA :)

  • @sheldortheconqueror1
    @sheldortheconqueror1 9 лет назад +1

    Really good and very helpful .. I was able to clear my doubts

  • @chrisaccou3174
    @chrisaccou3174 8 лет назад +2

    This man right here is the truth

  • @joshm.9224
    @joshm.9224 8 лет назад

    Tyler, you rock, man. You rock.

  • @askeerthanaiyer87
    @askeerthanaiyer87 7 лет назад

    Thank You..It was simply awesome.Do upload more videos of this kind

  • @ryanmarchese2250
    @ryanmarchese2250 6 лет назад

    This man is so much better than my teacher, who is being paid a salary. This guy works off of add revenue

  • @Heyitsadam21
    @Heyitsadam21 4 года назад

    Wow this is so clear to me now, thank you!

  • @Pappu-me8rt
    @Pappu-me8rt 6 лет назад

    So simply made and easy to understand!!!!
    Wow!!!

  • @damiangrey4675
    @damiangrey4675 7 лет назад

    you are a life saver tyler....

  • @madomermedo5666
    @madomermedo5666 12 лет назад

    i seriously love your videos

  • @ruyasatpathy1237
    @ruyasatpathy1237 2 года назад +1

    You saved my life

  • @24OakRaiders
    @24OakRaiders 11 лет назад

    Tyler, you are the man. awesome explanation. ty.

  • @librawoman8159
    @librawoman8159 9 лет назад +1

    This video saved my life

  • @ammarfallatah2995
    @ammarfallatah2995 8 лет назад +3

    يا شيخخخ احوب خااالتك 😘😘😘💖

  • @BiRainbow29
    @BiRainbow29 4 года назад

    Thank you for helping me with my future homework! You really know how to explain the concepts. 💯

  • @ery1502
    @ery1502 11 лет назад +1

    When people say a solution is less or more concentrated, they actually mean that the moles(atoms/molecules) of the solute are less or more crowded together in a solution? Shouldn't that say that the concentration is actually the concentration of a solute (in a solution )? I think about certain details so I'm sorry if it sounds weird.

  • @nafchillytube4674
    @nafchillytube4674 6 лет назад

    Boss/Sir/ you own my heart and I can't seem to understand how to thank you. You exactly explained how I wanted to ❤️

  • @bettygarces7863
    @bettygarces7863 10 лет назад

    Simple explanations, awesome pink shirt, you sir, have it all. Thank you!

  • @quriositysquared1028
    @quriositysquared1028 7 лет назад

    Simply awesome. Just mind blowing. Thank you!

  • @jullyray7645
    @jullyray7645 4 года назад

    I'll definitely want my teacher to see your videos. This is how science is taught. Not like how my teacher does. 😋

  • @blacklight4977
    @blacklight4977 7 лет назад +2

    Please make a video about Normality and Formality

  • @jmanasvini7797
    @jmanasvini7797 7 лет назад

    Thank u so much . Hope my teachers c this and learn from u

  • @cutesunnyaegyo
    @cutesunnyaegyo 8 лет назад +4

    NOW I GET IT THANK GOODNESS

  • @jiedengyuewo7169
    @jiedengyuewo7169 7 лет назад

    There are just three more concepts that I would like for him to touch on. Thats is this: Normality, osmolarity, and osmolality

  • @madhdamm2888
    @madhdamm2888 4 года назад

    our a wonderful instructor, professors should watch your videos and learn from you so they can teach better. Thanks for your wonderful videos....But why you didn't come up with videos recently. We like to see you soon on RUclips....Thanks a lot Sir...

  • @dishatewari1611
    @dishatewari1611 7 лет назад

    thankyou so much for all your videos! you're amazing.

  • @SoulWinningStudents
    @SoulWinningStudents 10 лет назад

    Excellent explanation. Keep it up!

  • @islamispeace2208
    @islamispeace2208 5 лет назад

    Thank you so Much sir you're awesome........ Love from India

  • @DB-pw9md
    @DB-pw9md 11 месяцев назад +1

    God bless you sir.

  • @riyabasu4478
    @riyabasu4478 5 лет назад

    Best explanation 😊

  • @krishitaraja801
    @krishitaraja801 4 года назад

    OMG!! Thanks a lot Tyler. U made it easy. U r amazing 😍

  • @ABeardedDad
    @ABeardedDad 12 лет назад

    So if I'm interpreting this right, there should also be another very slight (in this example at least) difference, but still important. In a 1M sol'n there is 1L of CaCl2 + Water, which would weight out to basically 1kg. However in the Molality it will actually be 1.111kg, which is 1kg of Water + 111.0g of CaCl2. Is this correct?? This would no doubt become a more significant difference also in different density solvents.

  • @cxllmegeo3557
    @cxllmegeo3557 2 года назад

    So molarity is basically volume and molality is weight
    Also at 2:11 shouldn’t the moles be in grams or am I buggin???

  • @mohamedamrelsenne394
    @mohamedamrelsenne394 6 лет назад +2

    can you please make a video for solubility??

  • @lamyasms4656
    @lamyasms4656 7 лет назад +11

    that one hot chemistry teacher

    • @spicasusl3
      @spicasusl3 5 лет назад

      bruh

    • @stormehh19
      @stormehh19 3 года назад

      That student who is only here for the bod. I mean seriously?

  • @ery1502
    @ery1502 11 лет назад +1

    I have a funny question, is it molar and molal concentration of solute or solution? You mention a molar of solution but isn't it molar concentration of solute in a solution (or simply molar concentration of solute)? I know it's just the naming but it still confuses me a bit, I would say molar concentration of solute in a solution and molal concentration of solute per solvent?

  • @ery1502
    @ery1502 11 лет назад

    I'm sorry I forgot to say this, so the correct term would be the molar or molal concentration of the solute (in a solution), right? And one more thing, so we just assume the entire amount of solute is dissolved, right? Like there isn't any part of it that is not dissolved, since the definition of concentration is the amount of solute dissolved in a solution. I hope you can answer my questions, thank you.

  • @istoriareiss
    @istoriareiss 4 месяца назад

    ياخي اشكر ام الي خلفتك
    you helped me a lot man

  • @रोहित1
    @रोहित1 2 года назад +1

    Thank you 🥺❤

  • @loganr0740
    @loganr0740 6 лет назад

    You my friend. You. You have saved me from a date worse than death, and you will be rewarded in the afterlife. Peace be with you

  • @8055aib
    @8055aib 2 года назад +1

    So helpful

  • @aradhanachhabra
    @aradhanachhabra 7 лет назад +2

    You are THE BEST .

  • @TehhStarzHD
    @TehhStarzHD 10 лет назад

    so is Molality ALWAYS greater than molarity in aqueous solutions, or are there factors such as density that will change that ?

  • @Toqefm
    @Toqefm 6 лет назад

    Do you also need to add solute to the 3rd flask then a solvent again until it reaches 1 liter or just add solvent up to 1liter???

  • @kezxiakianahaponesto6270
    @kezxiakianahaponesto6270 6 лет назад +1

    HI! I know I'm late and this vid was 6 years ago but I do hope you can make a video about Molality Sample Exercises. Thank you :)

    • @audreyandremington5265
      @audreyandremington5265 6 лет назад

      He has already made a molality practice problem video. I hope it isn't too late to be of use to you ☺☺☺.

  • @LakmalSajith
    @LakmalSajith 4 года назад

    keep up the nice content!

  • @abhinavinvincible122
    @abhinavinvincible122 5 лет назад

    Greately explained.

  • @michaelabah1037
    @michaelabah1037 3 года назад +1

    Thank you

  • @shrutitayal01
    @shrutitayal01 6 лет назад

    😀 best teacher!!