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Solving Freezing Point Depression Problems 

Jon Bergmann
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13 окт 2024

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Комментарии : 30   
@chromiumgaming3468
@chromiumgaming3468 4 года назад
Kf of water is 1.86 not 0.51 because 0.51 is its Kb
@Liboo52
@Liboo52 3 года назад
this is incredible, excellent teaching style. thank you sooooooooo much
@JonBergmann1
@JonBergmann1 3 года назад
Glad it was helpful. Have a great day
@aicnelavysulan9397
@aicnelavysulan9397 4 года назад
i feel like i'm being taught by mr bean :D
@brittanyshurack7929
@brittanyshurack7929 3 года назад
That was my first thought when I saw him!!
@duranjohnbryanc.2020
@duranjohnbryanc.2020 2 года назад
Exactly
@coolman4607
@coolman4607 Год назад
u guys are dicks lol
@mangogo21
@mangogo21 2 года назад
Clear and straight to the point. Thanks for that, I appreciate teachers like you :]
@danielhan5747
@danielhan5747 5 лет назад
Kf is 1.86 :)
@bhaskardevarakonda5134
@bhaskardevarakonda5134 4 года назад
I agree with you
@mariaroallos7056
@mariaroallos7056 3 года назад
yea even now Idek why he didnt do Kb...)
@sankarea329
@sankarea329 3 года назад
I'm soooo amazed how this guy's writing backwards in a readable handwriting and also he looks like Mr. bean HAHAHA
@JonBergmann1
@JonBergmann1 3 года назад
Many have said that I look like Mr. Bean? LOL
@hussainalabdullah4532
@hussainalabdullah4532 Год назад
U are the greatest of all time
@terencetrouve5676
@terencetrouve5676 4 года назад
Kf of h2o is 1.86 not 0.51...
@bhaskardevarakonda5134
@bhaskardevarakonda5134 4 года назад
Yes you are right
@bhaskardevarakonda5134
@bhaskardevarakonda5134 4 года назад
Kf of water is 1.86
@cryptogenic141
@cryptogenic141 3 года назад
Thank you! Helped for my pre-exam studying
@JonBergmann1
@JonBergmann1 3 года назад
Glad it helped!
@obaapapapabi3015
@obaapapapabi3015 2 года назад
Thanks, Sir. You are great
@tysken0251
@tysken0251 3 года назад
What do you do if you have two solvents mixed with water. Can you calculate them by their own using blagdens law. Or do you do something else
@JonBergmann1
@JonBergmann1 3 года назад
It would be the total molality of ALL of the solutes - note that if it is an ionic compound that completely disociates, you might need to multiply it by a factor - for example, MgCl2 would break into three ions so its amount would have a triple effect.
@tysken0251
@tysken0251 3 года назад
@@JonBergmann1 okay, say for example I have etyhlene glycol and MgCl2 solved in water. I have 200 g glycol and 200 g MgCl2 and 600 g of water. Could I do like this: 200g glycol/62.07 (molar mass)=3.2. It has i factor=1 so then I take 3.2/0.6 (water in kg)=5.4. Then I multiply that with 1.86 (constant for water) and get 10 degrees. Then I do the same thing for MgCl2 but use I factor= 3 instead. So 200/95=2.1 moles. 2.1/0.6 times 1.86 times 3 which is 20. Then I add 20 to 10 and get 30. So the frezzing point should be 0-30=-30. Is this correct?
@JonBergmann1
@JonBergmann1 3 года назад
@@tysken0251 yes - well done
@yaasmiinhussein5488
@yaasmiinhussein5488 3 года назад
Hi teacher how I can solve difficult problems about boiling point elevation, freezing point depression, osmotic pressure and vapour pressure? Please answer this question
@kennardesguerra9542
@kennardesguerra9542 2 года назад
Hey my good sir! This video is very informative, I'd like to thank you for that. But can you do something about the screeching of the pen? Thanks hehehe
@hotdogmans
@hotdogmans 4 года назад
how is he writing backwards
@JonBergmann1
@JonBergmann1 4 года назад
I'm not, I simply use software to do a horizontal flip after shooting the video
@nishan9243
@nishan9243 Год назад
Sir thats the 0.51 is kb not kf. Kf is -1.86
@JonBergmann1
@JonBergmann1 Год назад
good catch
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