In the presence of water, an acid will ionize to form the hydrogen ions, H+
So, water is essential for the formation of hydrogen ions that cause acidity
Role of water in the formation of hydroxide ions
In the presence of water, alkali will dissociate to form hydroxide ions, OH¯
Hence, water is essential for the formation of hydroxide ions that cause alkalinity
A set of numbers used to show the degree of acidity and alkalinity of a solution
pH values of less than 7 indicates an acidic solution
pH values of more than 7 indicates an alkaline solution
pH values of 7 indicates a neutral solution
pH values Higher pH value
higher concentration of hydroxide ion
Lower pH value
higher concentration of hydrogen ion
When acids meets base
pH is actually a measurement of the concentration of hydrogen, H+ in a solution The higher the concentration of the H+ ions, the lower the pH value, and more acidic the solution is The higher the concentration of the OH¯ ions, the higher the pH value and the more alkaline solution the solution is.
Strong acidis an acid that dissociate (ionize ) completely in water to form hydrogen ion,H+ of high concentration
Weak acidis an acid that dissociate (ionize ) partially in water to produce hydrogen ions,H+ of low concentration.
Mineral acids such as hydrochloric acid, nitric acid, and sulphuric acid are strong acids Weak acids-ethanoic acid, methanoic acid, citric acid, tartaric acid
Strong alkaliis produce when a base dissociates completely in water to produce hydroxide ions, OH- of high concentration
Weak alkaliis produced when a base dissociates partially to produce hydroxide ions, OH- of low concentration.