Learn about acids, alkalis and how the pH scale is used to measure the acidity or alkalinity of a solution. BBC Bitesize Scotland Science Third Level CfE ...

The pH scale measures the acidity or alkalinity of a substance, ranging from 0 to 14, with values below 7 representing acidity, above 7 representing alkalinity, and 7 representing neutrality.

Acid/base indicators are described and used to identify substances as acids or bases. Indicators and the pH Scale: Acid/base indicators are described and used to identify substances as acids or ...

A worker checks the pH level of desalinated water in the laboratory at the desalination plant in Palma de Mallorca on April 4, 2014. The pH scale was initially invented in 1909 by chemist S.P.L ...

With pH signifying potential of hydrogen, the logarithmic scale is used to specify the acidity or basicity of an aqueous solution. The scale, which rates acidity or alkalinity from 0 to 14, can be ...

Sørensen was born in 1868 in Havrebjerg, Denmark. He headed the famous Carlsberg Laboratory in Copenhagen from 1901 to 1938, where he created the pH scale. He died in 1939.