Vant hoff Factor

[Deng13]

What would be the vant hoff factor for a ionic compound that is not soluble in water ie AgCl or like Mg(OH)2? I read somewhere online that AgCl will have a vant hoff factor of zero. does that mean that AgCl will have no effect on freezing and boiling point and thus the BP and MP would remain the same of 100 and 0?? Or would it be one....and you would go on to solve it as if it was a non-electrolyte?

---

Members don't see this ad.

 

[MSUstudent]

What would be the vant hoff factor for a ionic compound that is not soluble in water ie AgCl or like Mg(OH)2? I read somewhere online that AgCl will have a vant hoff factor of zero. does that mean that AgCl will have no effect on freezing and boiling point and thus the BP and MP would remain the same of 100 and 0?? Or would it be one....and you would go on to solve it as if it was a non-electrolyte?

I think AgCl would have a van Hoff factor of 1 because its doesn't dissociate in solution.

 

[Deng13]

I think AgCl would have a van Hoff factor of 1 because its doesn't dissociate in solution.

http://www.d155.org/PR/academics/science/chemistry/Notes-vantHoff.pdf.pdf

 

[Deng13]

from what i understand so far is that any non polar like methane and ethane are not soluble in water therefore have a vant hoff factor of zero and any ionic compound that is also not soluble has a vant hoff factor of zero thus making the BP elevation and FP depressing to be zero.

Can anyone confirm this?

 

[gigawatt]

You're weak on understanding colligative properties...

These depend on the number of moles of solute in solution, not what kinds, just how many.

For something that's insoluble, you have no solute. Hence, van't Hoff factor of 0.

 

[Deng13]

You're weak on understanding colligative properties...

These depend on the number of moles of solute in solution, not what kinds, just how many.

For something that's insoluble, you have no solute. Hence, van't Hoff factor of 0.

lol i know these are the only things that kick my ass.

So AgCl and Propane would have a vant hoff factor of zero in water which would not change the BP and MP?

 

[Baylor2011]

So AgCl and Propane would have a vant hoff factor of zero in water which would not change the BP and MP?

Haha yes...just plug it into the formula and you'll get 0.

 

[Deng13]

Haha yes...just plug it into the formula and you'll get 0.

thanks!!! now i can sleep! lol