Solving Freezing Point Depression Problems

[@chromiumgaming3468]

Kf of water is 1.86 not 0.51 because 0.51 is its Kb

[@Liboo52]

this is incredible, excellent teaching style. thank you sooooooooo much

[@JonBergmann1]

Glad it was helpful. Have a great day

[@aicnelavysulan9397]

i feel like i'm being taught by mr bean :D

[@brittanyshurack7929]

That was my first thought when I saw him!!

[@duranjohnbryanc.2020]

Exactly

[@coolman4607]

u guys are dicks lol

[@mangogo21]

Clear and straight to the point. Thanks for that, I appreciate teachers like you :]

[@danielhan5747]

Kf is 1.86 :)

[@bhaskardevarakonda5134]

I agree with you

[@mariaroallos7056]

yea even now Idek why he didnt do Kb...)

[@sankarea329]

I'm soooo amazed how this guy's writing backwards in a readable handwriting and also he looks like Mr. bean HAHAHA

[@JonBergmann1]

Many have said that I look like Mr. Bean? LOL

[@hussainalabdullah4532]

U are the greatest of all time

[@terencetrouve5676]

Kf of h2o is 1.86 not 0.51...

[@bhaskardevarakonda5134]

Yes you are right

[@bhaskardevarakonda5134]

Kf of water is 1.86

[@cryptogenic141]

Thank you! Helped for my pre-exam studying

[@JonBergmann1]

Glad it helped!

[@obaapapapabi3015]

Thanks, Sir. You are great

[@tysken0251]

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]

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]

@@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]

@@tysken0251 yes - well done

[@yaasmiinhussein5488]

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]

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]

how is he writing backwards

[@JonBergmann1]

I'm not, I simply use software to do a horizontal flip after shooting the video

[@nishan9243]

Sir thats the 0.51 is kb not kf. Kf is -1.86

[@JonBergmann1]

good catch