Тёмный

Concentration and Molarity explained: what is it, how is it used + practice problems 

Crash Chemistry Academy
Подписаться 71 тыс.
Просмотров 149 тыс.
50% 1

What is concentration, how does molarity measure concentration, and how can we use molarity in calculations to find specific amounts of ingredients to make solutions of a specific volume and concentration?
This video includes four practice problems on how to calculate molarity and how to use molarity to find specific amounts of solute or volume to be used for a needed concentration (molarity).
There are also sporadic non-sequiturs, both verbal and visual, to add some enormous levity to the proceedings, for the approbation of all concerned.
CC Academy videos are easy 101 crash course tutorials for step by step Chemistry help on your chemistry homework, problems, and experiments:
- Solution Stoichiometry Tutorial: How to use Molarity
- Stoichiometry
- Quantum Numbers
- Rutherford's Gold Foil Experiment, Explained
- Covalent Bonding Tutorial: Covalent vs. Ionic bonds
- Metallic Bonding and Metallic Properties Explained: Electron Sea Model
- Effective Nuclear Charge, Shielding, and Periodic Properties
- Electron Configuration Tutorial + How to Derive Configurations from Periodic Table
- Orbitals, the Basics: Atomic Orbital Tutorial - probability, shapes, energy
- Metric Prefix Conversions Tutorial
- Gas Law Practice Problems: Boyle's Law, Charles Law, Gay Lussac's, Combined Gas Law
- Ionic Bonds and Compounds
- Chemical reaction types
- product prediction for specific reaction types
- Surface Tension
- what is heat
- what is fire
- The Bohr Model of the Atom
- Organic Molecules and the Versatility of Carbon
- Hybrid Orbitals-- Valence Bond Theory
- Ideal Gas Law and Gas Density

Опубликовано:

 

22 июл 2024

Поделиться:

Ссылка:

Скачать:

Готовим ссылку...

Добавить в:

Мой плейлист
Посмотреть позже
Комментарии : 97   
@talha4974
@talha4974 2 года назад
After being confused on this for like 2 hours, I now understand it in 5 mins, thank you!
@CrashChemistryAcademy
@CrashChemistryAcademy 2 года назад
😊
@ashleybroussard9039
@ashleybroussard9039 5 лет назад
Your graphics make it quick and to the point. Thanks much!
@laurenhickey6274
@laurenhickey6274 3 года назад
wow, imagine not understanding this when taught it over 2 days and then watching a 5 1/2 min video and being a pro at it.
@morgantaylor06
@morgantaylor06 2 года назад
Awesome video, this makes much more sense. Thank you so much.
@jarretberenson1214
@jarretberenson1214 5 лет назад
beautifully done. Thanks!
@martha-norajean-francois9941
@martha-norajean-francois9941 3 года назад
I can't thank you enough! Just the way you explained it. Thank you!
@CrashChemistryAcademy
@CrashChemistryAcademy 3 года назад
I'm glad it helped!
@waseeahmed1596
@waseeahmed1596 3 года назад
Thanks man. I was really struggling in this topic
@bobbleheadgary
@bobbleheadgary 5 лет назад
beautiful! thanks for posting!!
@hectorgonzalezvaldes945
@hectorgonzalezvaldes945 3 года назад
¡Qué buen video! Entretenido y al grano. ¡Felicidades!
@CrashChemistryAcademy
@CrashChemistryAcademy 3 года назад
Muchas gracias, agradezco tu comentario!
@mariacabrera1689
@mariacabrera1689 5 месяцев назад
Great video! Ready for my Chem exam tmr
@ceeyar2003
@ceeyar2003 4 года назад
Understood well. Thanks!
@madjedbebeaesara5296
@madjedbebeaesara5296 3 года назад
Excellent presentation!
@fadil9229
@fadil9229 4 года назад
thank you sir this explanation was fantastic, really appreciated.
@CrashChemistryAcademy
@CrashChemistryAcademy 4 года назад
Thanks, I appreciate your comment.
@fadil9229
@fadil9229 4 года назад
@@CrashChemistryAcademy no problem sir
@lspmagflux9296
@lspmagflux9296 2 года назад
Wonderful explanation and your methodology is amazing and works pretty well for me. Thank you very much.🙏
@CrashChemistryAcademy
@CrashChemistryAcademy 2 года назад
Thanks!🙂
@Joe-je1vx
@Joe-je1vx 2 года назад
thank you this helped clear things up
@fahadhussainwrites1889
@fahadhussainwrites1889 Год назад
Very informative bro👍
@alexandrashields2600
@alexandrashields2600 3 года назад
Thanks so much. So easy to understand!! :-)
@husnainnaseer7962
@husnainnaseer7962 Год назад
Made easy understanding😊
@raymondteng8357
@raymondteng8357 3 года назад
Nice vid! This just help my chem so much!!
@CrashChemistryAcademy
@CrashChemistryAcademy 3 года назад
You're welcome!
@dyingoldman2312
@dyingoldman2312 9 месяцев назад
Makes perfect sense, thanks!!
@sumondas5330
@sumondas5330 3 года назад
Thank you..was very helpful.
@biniamwale576
@biniamwale576 3 года назад
It is so easy make it heavy unless and other ways continue your teaching Tnx
@subbusivasubrahmanyam1483
@subbusivasubrahmanyam1483 2 года назад
What u done u r work on this video amazing for the even don't have aminimum awareness
@savannahparrish7261
@savannahparrish7261 3 года назад
awesome Explanation
@fartuuncraxman9896
@fartuuncraxman9896 3 года назад
Thanks this vedio really I like it👍 😍
@husameltigani4310
@husameltigani4310 5 лет назад
Thank you. You are always make everything easy to be understood. I would like to ask you to explain the idea when we see a percentage in some chemical products. For example 3.5 % Sodium Chloride. Sometimes also we find 99.9% NaCl or 70 % Nitric Acid. So how to make those things related to Molarity. Thank you again
@CrashChemistryAcademy
@CrashChemistryAcademy 5 лет назад
percent is either volume/volume (v/v), which is volume of solvent per volume of solution, or mass/mass (m/m), mass solute per mass of solution, or mass/volume (m/v), mass solute/volume solution. Commercial products often do not say which type of percent they are using. The 3.5% NaCl is likely m/v, so that would be 3.5 g NaCl dissolved in a total volume of 100 mL solution. You can see that this is not a very good measure since 100 mL of solution is not = 100 g, and so the percent does not make 100% sense, but that is very often how it is done. To get molarity you would simply find #mol NaCl in 3.5 g and divide by 0.1 L. The 99.9% NaCl just means there are 0.1% impurities in the preparation. Percent acids are a different story, since it is referring to a percent of the concentrated molar preparation. A concentrated solution of nitric acid is about 16 molar, and so 70% solution is 70% of 16 molar. On the other hand concentrated nitric acid comes out to about 70% m/m, so it may just be referring to that.
@abhiadusumilli7981
@abhiadusumilli7981 2 года назад
Thank You sooooooo Much!!!
@tearex7689
@tearex7689 3 года назад
u are better than my chem tr
@Makeartsall
@Makeartsall Год назад
Thank you so much mannnn You made my doubt crystal clear ❤ Thanks again ❤❤❤
@CrashChemistryAcademy
@CrashChemistryAcademy Год назад
You're welcome!
@chuckcarlson2314
@chuckcarlson2314 4 года назад
nicely done
@jeeshaanjoshi
@jeeshaanjoshi 3 года назад
Wish the questions they asked in exams were this easy. You could've increased the difficulty of questions exponentially as you progressed to give examples. Otherwise, really loved the video. Molarity explained in a nutshell. Great work !!
@CrashChemistryAcademy
@CrashChemistryAcademy 3 года назад
Thanks and an interesting comment. I will put it on my list of videos to do. But it's a long list, so not sure when it will happen.
@syntacticcave9514
@syntacticcave9514 2 года назад
Amazing 👌👍🔥
@beizong4052
@beizong4052 4 года назад
quick and clean with no shit talking
@JJeev
@JJeev 2 года назад
danke! Tu bist der beste
@evanbritton4859
@evanbritton4859 2 года назад
Brilliant
@rafaelmera3865
@rafaelmera3865 3 года назад
Wow, nice video, I am from Ecuador, I like your video..
@CrashChemistryAcademy
@CrashChemistryAcademy 3 года назад
Gracias!
@albertopoli8896
@albertopoli8896 5 лет назад
Good evening , I’d a question . If I dissolve 5 mole of NaCl in one liter of water, I have a 1M solution : is it correct? But the sum of both volume ( water and salt) is higher than 1Liter. Could you explain me where I mistake?
@CrashChemistryAcademy
@CrashChemistryAcademy 5 лет назад
molarity is moles per liter of solution, not per liter of water. First, you would dissolve the 5 mole NaCl in less than one liter of water, about 800-900 mL because, as you said, the total volume will increase. Once all 5 moles have dissolved, you then add enough water to bring the total solution volume to one liter. You now have 5 moles dissolved per liter of solution. Does that make sense? Second, this would be a 5M solution, not 1M, since you have 5 mole/liter, not 1 mole per liter.
@albertopoli8896
@albertopoli8896 5 лет назад
Crash Chemistry Academy Many thanks
@jagadishkishan3388
@jagadishkishan3388 2 года назад
u earned a sub
@CrashChemistryAcademy
@CrashChemistryAcademy 2 года назад
Thank you!
@Menna23326
@Menna23326 3 года назад
Awesome
@reteenaann3431
@reteenaann3431 Год назад
Thank you....
@CrashChemistryAcademy
@CrashChemistryAcademy Год назад
You're welcome!
@silliisubbii
@silliisubbii 2 года назад
Thanks man now ik
@asifshekh5420
@asifshekh5420 3 года назад
Fabulous
@harshitagadavarthi1373
@harshitagadavarthi1373 4 года назад
Can someone explain Me y did we multiply it here 3:45
@CrashChemistryAcademy
@CrashChemistryAcademy 4 года назад
The question asks for moles but gives liters. The multiplication allows you to cancel liters and end up with moles.
@qwertyheadphones2801
@qwertyheadphones2801 2 года назад
Sir thanks 😄😄
@CrashChemistryAcademy
@CrashChemistryAcademy 2 года назад
You're welcome!
@Sk1pperCS
@Sk1pperCS 16 дней назад
2:40, wouldn't the molarity be half of .65, not double? If you increase the volume of the solution wouldn't it make NaF less concentrated?
@CrashChemistryAcademy
@CrashChemistryAcademy 15 дней назад
This is the volume of the solution (as you said), not the solvent. The solution includes all components: the solvent, water, and the solute, NaF. So changing the volume of the solution is irrelevant to the molarity. It stays the same. If you halve the solution, both the amount of solvent AND solute are halved, so the concentration is constant. If you take 1 liter of 1.3 M NaF, half of it, 0.5 L, will have 1.3/2 mol NaF, or 0.65 mol NaF. Hope that makes sense.
@Sk1pperCS
@Sk1pperCS 15 дней назад
@@CrashChemistryAcademyI think I got it now. Thanks for clearing that up! Means a ton.
@CrashChemistryAcademy
@CrashChemistryAcademy 10 дней назад
You’re welcome! Thanks for watching.
@suhaspatil111
@suhaspatil111 5 лет назад
Best
@AmarSingh-uw7sm
@AmarSingh-uw7sm 3 года назад
Sir 58.5 g is this mass of nacl
@CrashChemistryAcademy
@CrashChemistryAcademy 3 года назад
58.5 grams per mole is the molar mass of NaCl
@mohammadwaseemsohail110
@mohammadwaseemsohail110 3 года назад
Great explanation Sir can you tell why you divided 42 grams in 2 question please..
@CrashChemistryAcademy
@CrashChemistryAcademy 3 года назад
using molarity requires that we have moles, but the problem gives grams, not moles, so the molar mass is used to convert grams to moles. The molar mass (periodic table mass) of NaF is 23.0 + 19.0 = 42.0 g/mol. For NaF, there are 42.0 grams in every mole of NaF, which is what the periodic table masses tell us. Dividing by that converts grams to moles.
@mohammadwaseemsohail110
@mohammadwaseemsohail110 3 года назад
Thank you very for your wonderful reply
@CrashChemistryAcademy
@CrashChemistryAcademy 3 года назад
@@mohammadwaseemsohail110 You're welcome. You may want to view my video on mole conversions, which gives you a more in depth understanding of molar mass, the periodic table, and mole conversions: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-t1pjGbwqt9o.html
@biswajitdutta9929
@biswajitdutta9929 2 года назад
Love from India
@CrashChemistryAcademy
@CrashChemistryAcademy 2 года назад
Love to India! 💖
@JK-0423
@JK-0423 9 месяцев назад
Holly shiiit I wish I could give him my tuition, instead of my univeristy of SF!!!
@CrashChemistryAcademy
@CrashChemistryAcademy 9 месяцев назад
maybe split it?
@JK-0423
@JK-0423 9 месяцев назад
@@CrashChemistryAcademy I strongly agree that they should split it with you.
@Puri_vyshu_Talks
@Puri_vyshu_Talks 2 года назад
2nd question ❓
@science_dar3022
@science_dar3022 4 года назад
Wonderful
@CrashChemistryAcademy
@CrashChemistryAcademy 4 года назад
Thanks!
@AmarSingh-uw7sm
@AmarSingh-uw7sm 3 года назад
Reply sir whenever you see my question
@learnbymanikarna5498
@learnbymanikarna5498 4 года назад
How is watching on lockdown 👇
@CrashChemistryAcademy
@CrashChemistryAcademy 4 года назад
There are always some who benefit from disasters. My channel hits have increased quite a bit since lockdown. So while teaching remotely is a drag, I at least get to look forward to seeing how my channel is doing.
@Zak-qp5ln
@Zak-qp5ln 3 года назад
Who's joe
@lilnugget2280
@lilnugget2280 3 года назад
joe is the molar concentration now take an example we have 25.2 grams and volume 0.75 what is the molarity?
@Zak-qp5ln
@Zak-qp5ln 3 года назад
@@lilnugget2280 Joe mama
@lilnugget2280
@lilnugget2280 3 года назад
@@Zak-qp5ln NOOOOOO I HAVE FELL TO THIS TRAP AGAIN
@Zak-qp5ln
@Zak-qp5ln 3 года назад
@@lilnugget2280 YOU FOOL
@lilnugget2280
@lilnugget2280 3 года назад
@@Zak-qp5ln NOW IM MAD
@TheKartana
@TheKartana 5 лет назад
First!!!
@peterwalsh4530
@peterwalsh4530 5 лет назад
First
@zekzimbappe5311
@zekzimbappe5311 3 года назад
In my case i find that teachers make it seems like molarity is different from the concentration A lot of exercices go like this : We have Naoh,10M ........etc calculate the concentration And no its not 10 mol/l
@CrashChemistryAcademy
@CrashChemistryAcademy 3 года назад
Not sure what the question would be asking, since 10M is the concentration, or also stated as 10 mol/L, as you said. It is exactly the same.
@ericwright8592
@ericwright8592 3 года назад
I think they want you to convert molarity to a concentration written as g/l. I remember back in high school they did that and it was confusing. They should just ask "how many grams of NaCl are in 1 liter of 10M NaCl?". Grams/liter or molar, it doesn't matter. Two ways of explaining the same thing. There are some substances where molarity doesn't quite make sense to use , like proteins which are often heterogeneous mixtures of many proteins with different molar masses. Almost nobody would say, I have a 1 molar solution of protein. It'd be mass per volume. mg/ml, ug/ul or g/l
@zekzimbappe5311
@zekzimbappe5311 3 года назад
@@ericwright8592 yeah i figured it out at the end i was just in hurry back then ,i had an exam which made me confused glad i got 60.6% in that hell subject ( i have to go through the second exam after 20 days from now though )
Далее
Solutions Overview and Types
12:16
Просмотров 200 тыс.
Strong cat !! 😱😱
00:19
Просмотров 2,4 млн
Разбудили Любимой Песней 😂
00:14
Украшаю чехлы 🎀
00:51
Просмотров 201 тыс.
I Melted Wood With Friction
8:44
Просмотров 862 тыс.
Molar Concentration of Solutions in Chemistry
19:37
Просмотров 1,8 тыс.
Molarity and Dilution
2:30
Просмотров 266 тыс.
Solutions: Crash Course Chemistry #27
8:20
Просмотров 1,3 млн
Molarity Practice Problems
9:43
Просмотров 1,9 млн
Molarity: A Deeper Understanding
11:51
Просмотров 20 тыс.
Strong cat !! 😱😱
00:19
Просмотров 2,4 млн