Do all bases give OH ions in solution?

This depends on the definition/theory of acids and bases that you use. According to Arrhenius, acids dissociate in water to produce [math]H^+[/math] ions and bases dissociate in water to produce [math]OH^-[/math] ions. read more

According to Arrhenius, acids dissociate in water to produce [math]H^+[/math] ions and bases dissociate in water to produce [math]OH^-[/math] ions. read more

Simply put. Acids will raise the H+ concentration in a solution and Bases will raise the OH- concentration in solution, how they do so (for most common acid and bases) is slightly different. In general Acids, strong or weak, donate a proton (H+) to the solution causing a raise in H+ concentration. read more