Difference between revisions of "PH"
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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: | 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 | |
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[[Category:Materials database]] | [[Category:Materials database]] | ||
Latest revision as of 13:43, 11 June 2020
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