Acids can be defined as substances which when dissolved in water to produce hydrogen ions.
Acid and bases in water
Acids and bases dissolve in water and, because they increase the concentration of either protons or hydroxide ions, they suppress water self-ionization.
- Acids in water solution dissociate H+ ions.
- Base, when dissolved in water, produces OH– ion.
- When an acidic solution is diluted with water, the concentration of H+ ions decreases and the pH of the solution increases towards 7.
- When an alkali is diluted with water, the concentration of OH– ions decreases, and the pH of the alkali fall towards 7