7G

Ø The concept of pH was first introduced by the Danish chemist  Søren Peder Lauritz Sørensen  at the Carlsberg Laboratory in 1909 . Ø pH was originally acronym for French clause " pouvoir hydrogène ," which can be translated into the English as "power of hydrogen," or "potential of hydrogen." Ø pH is used to quantify acidic or alkaline nature of a chemical which is measured in terms of H+ ions concentration.