EVERYDAY SCIENCE

Detailed explanation-1: -The pH value of a solution directly measures the concentration of hydrogen ions (H+) in the solution. Acids have a large H+ concentration, which translates to a small pH value. Bases have very little H+. Basic solutions have large pH values-greater than pH 7.

Detailed explanation-2: -In this way, pH is determined by hydrogen-ion concentration. In the case of a neutral solution, [H+]=10-7, which we call a pH of 7. This means, for example, that a hydrogen-ion concentration of a solution with a pH of 4 is 10-4mol/l, meaning it contains 0.0001 mol of hydrogen ions in a solution of 1 liter.

Detailed explanation-3: -The pH of a solution is a measure of hydrogen ion concentration, which in turn is a measure of its acidity. Pure water dissociates slightly into equal concentrations of hydrogen and hydroxyl (OH−) ions. For a neutral solution, [H+] is 10−7, or pH = 7.

Detailed explanation-4: -pH is a measure of the concentration of hydrogen ions in a solution. The lower the pH, the higher the concentration of hydrogen ions, and the more acidic a solution is. Alkaline or basic solutions have lower concentrations of hydrogen ions and a pH above 7.

Detailed explanation-5: -The pH is an indication for the acidity of a substance. It is determined by the number of free hydrogen ions (H+) in a substance. Acidity is one of the most important properties of water.