Genecks Posted February 1, 2010 Share Posted February 1, 2010 Let's say water is attracting a H atom. That's hydrogen bonding, but can this also act as ionic bonding? Link to comment Share on other sites More sharing options...
Red7 Posted February 1, 2010 Share Posted February 1, 2010 (edited) It just wouldn't hold like an ionic bond would (of course i guess there wouldn't any ionic bonds around anyways), It would just stop by to say hi and zip off. Edited February 1, 2010 by Red7 Link to comment Share on other sites More sharing options...
Horza2002 Posted February 1, 2010 Share Posted February 1, 2010 If the water managed to pull that hydrogen completely off the other moleules (i.e deprotonate it) then you'd have an ionic interaction. I think ionic bonds are typically reserved for things like Na+ and Cl- in a lattice. Link to comment Share on other sites More sharing options...
Lifeson Posted February 1, 2010 Share Posted February 1, 2010 No. Ionic bonding occurs when one molecule loses an electron and one gains an electron or. The resulting exchange creates a cation and an anion held together by their opposite charges. Hydrogen bonds are similar to ionic bonds in that respect, however they are bonds of partial charges; charges created by the polar properties of the molecule that don't quite equal enough of a force to be a true strong bond. Virtually anything that hydrogen bonds has a polar-covalent bond and an electron exchange would involve the breaking of the bond (as in deprotonation mentioned by Horza2002) to form another compound. So water cannot create an ionic bond without losing an atom of some kind. Link to comment Share on other sites More sharing options...
Genecks Posted February 1, 2010 Author Share Posted February 1, 2010 If the water managed to pull that hydrogen completely off the other moleules (i.e deprotonate it) then you'd have an ionic interaction. I think ionic bonds are typically reserved for things like Na+ and Cl- in a lattice. That would be possible with H3O+, then... right? Link to comment Share on other sites More sharing options...
Horza2002 Posted February 2, 2010 Share Posted February 2, 2010 yes. for example...if you have HCl acid...what u really have is H3O+ and Cl-....in this case there will be ionic interactions seeing as there are ions involved. Link to comment Share on other sites More sharing options...
Genecks Posted February 2, 2010 Author Share Posted February 2, 2010 Well, there is the equilibrium that occurs with water. 2H2O <----> OH- + H3O+ I believe that's it. So, in that sense, yes, water can become ionic. Link to comment Share on other sites More sharing options...
Horza2002 Posted February 2, 2010 Share Posted February 2, 2010 In principle yes, there is that equilibrium. But in practise the equilbrium will lie well on the side of 2 H2O. http://www.chemguide.co.uk/physical/acidbaseeqia/kw.html That link exaplins what is kown as the ionic product of water, Kw. It calculates that at any one time, there is only 1x10(-7) M of the ionic form ion water so it is indeed tiny. Link to comment Share on other sites More sharing options...
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