PH
Revision as of 07:12, 24 July 2013 by (username removed)
Description
A logarithmic scale (0-14) used to measure the acidity or alkalinity of a solution. A pH of 7 indicates a neutral solution. The pH drops as the acidity of the solution increases and a pH of 0 indicates a very strong acid. Conversely, the pH increases and the alkalinity of the solution increases. Example pH values are:
- hydrochloric acid = 0.7
- acetic acid = 2.8
- boric acid = 5.6
- neutral water = 7.0 (without dissolved carbon dioxide)
- sodium bicarbonate = 8.3
- sodium carbonate = 12.1
- sodium hydroxide = 13.1