The pH level of a solution is determined by the amount of positive hydrogen ions and negative hydroxide ions present. Acids have a low pH, bases a higher pH. Typically, when an acid and a base are combined, water and a salt are formed. pH Level. pH test. The pH level is also known as the potential of hydrogen level. read more
A salt is formed when an acid reacts with a base in the process of neutralization. This causes the positively charged hydrogen ion of the acid compound to be replaced by a metal ion. The product is a neutral compound with a related number of positive and negative ions. read more
Acid. Base. Arrhenius Definition. An acid is any chemical compound which when dissolved in water gives a solution with a hydrogen ion activity greater than in pure water. read more