what of these will lower the freezing point the most? KCl, H2SO4, or C6H12O6?

[Smooth Operater]

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what of these will lower the freezing point the most? KCl, H2SO4, or C6H12O6?

do I just only looking for which compounds would dissociate into most number of ions, wich is H2SO4 in this case.

How about the "molar mass" of each compounds, do I have to consider them since change of freezing point Temperature = Kf*m where m is mole/Kg of solvent?

Hope somone can clarify it. THANKS! 😉

 

[aranjuez]

Your dissociation idea is correct. H2SO4.

aranjuez

 

[dat_student]

what of these will lower the freezing point the most? KCl, H2SO4, or C6H12O6?

do I just only looking for which compounds would dissociate into most number of ions, wich is H2SO4 in this case.

How about the "molar mass" of each compounds, do I have to consider them since change of freezing point Temperature = Kf*m where m is mole/Kg of solvent?

Hope somone can clarify it. THANKS! 😉

the one w/ the largest van't hoff factor 😉

 

[aranjuez]

Oop. Forgot to add something. Kaplan has a nasty habit of leaving out that (delta)Tf = Kf*m*i, where i is the amount ions is dissociates into, I believe.

Don't forget your i's!

aranjuez

 

[UCFpremed]

Oop. Forgot to add something. Kaplan has a nasty habit of leaving out that (delta)Tf = Kf*m*i, where i is the amount ions is dissociates into, I believe.

Don't forget your i's!

aranjuez

Gotta love those great Kaplan materials.

 

[JohnDoeDDS]

yea I def realized they left out the i! Good thing I remembered it from my gen chem class.

Dont forget to look at the molality also.