which equation represents an interaction of a weak base with water?
1) NaOH(aq)==>Na+(aq)+OH^1-(aq)
2) CH3CH2OH(I)==>CH3CH2OH(aq)
3) N2H4(aq)+H2O(I)<==>N2H5+(aq)+OH1-(aq)
4) HPO4^2-(aq)+H2O(I)<==> PO4^3-(aq)+H3O+(aq)
5) H2O <==> H+ + OH-