can one seperate water into ions, like H2 & 0??

Question

when trying determine the net ionic eq. of:
Fe(OH)3 + HNO(aq)---> Fe(NO3)3 + H2O?

Answer 1

Water can be separated to O2 and H2 through electrolysis. However, if talking about net ionic equations, it is written as a molecule, if it is in fact water. For your equation above, the full ionic equation is (I assume you mean HNO3, not HNO)

Fe3+ + OH- + H+ + NO3 - --> Fe3+ + NO3 - + H2O

and the net is

OH- + H+ --> H2O

It is not water on the reactant side, so it is not written as water.

Answer 2

No - it is covalently bonded, and is always included in ionic equations as H2O(l).