March 29, 2024, 05:18:34 AM
Forum Rules: Read This Before Posting


Topic: Iodine solubility  (Read 29055 times)

0 Members and 1 Guest are viewing this topic.

Offline djiang87

  • Regular Member
  • ***
  • Posts: 23
  • Mole Snacks: +0/-0
Iodine solubility
« on: October 28, 2009, 06:45:22 PM »
Im just checking if my answer to this question is correct

'why is iodine more soluble in cyclohexane then in water'

This is the answer i got:

Water is polar and cyclohexane is non polar. Substances with like polarities mix together better. Since iodine is non polar, iodine is more soluble in cyclohexane than in water.

Offline vhpk

  • Full Member
  • ****
  • Posts: 259
  • Mole Snacks: +12/-25
  • Gender: Male
Re: Iodine solubility
« Reply #1 on: October 29, 2009, 02:11:06 AM »
Yes, I think u're correct, " like dissolves like"
Genius is a long patience

Offline pilgrim3927

  • Very New Member
  • *
  • Posts: 1
  • Mole Snacks: +0/-0
  • Gender: Male
Re: Iodine solubility
« Reply #2 on: November 11, 2009, 02:27:48 AM »
Confirming answer is correct. Iodine is non-polar and cyclohexane is non-polar.
Water is polar. Like dissolves like and so Iodine is soluble in cyclohexane but very limited solubility in water if at all.
In Iodine the bond between the 2 iodine atoms is covalent and non-polar.
Hexane is non-polar but for different reasons - the net polarity is zero because it is a symmetric molecule.
Water is polar because the O-H bonds are ionic and therefore polar. The molecule has a bent configuration H- O     and so has a net polarity.   
                                |
                                H           Suggest you get to understand electronegativities and ionic and covalent bonding.

Offline djiang87

  • Regular Member
  • ***
  • Posts: 23
  • Mole Snacks: +0/-0
Re: Iodine solubility
« Reply #3 on: November 12, 2009, 09:35:37 AM »
Thx for the replies guys. This was just some prework i had to do before prac. I dont rly need to know any of this stuff for my subject as none of our pracs are even slightly related to our studies. I just needed to answer some questions to get the marks. However i did get to see first hand how water and cyclohexane dont mix at all. This made things very annoying when i was trying to clean out the pipettes that had cyclohexane in it. This brings me to another question. Whats the best way to clean a pipette which has cyclohexane in it?

Sponsored Links