For what does #pH# stand?

1 Answer
Aug 7, 2015

Originally #pH# stood for pouvoir hydrogene, and is formally defined on the logarithmic scale, #pH = -log_10[H^+]#

Explanation:

Given the defintion if #pH = 7#, then #[H^+] = 10^-7 mol L^-1#. More positive #pH# values describe alkaline solutions, whereas smaller or negative #pH# values identify more acidic conditions.

Solution concentration is generally defined by "moles of solute per volume of solution".