What is the pH of an acid? What is the pH of a base? What is the pH of a neutral substance?
2006-12-12 12:20:42 · 4 answers · asked by Helping Dad 1 1 in Science & Mathematics ➔ Chemistry
pH is defined as the negative logarithm of the concentration of acid particles. Usually any pH less than 7 is considered as acidic. As you decrease the pH value the concentration of acid gets greater. A change of 1 pH unit makes a 10 fold change in acid concentration. A pH of say 4 would be 10 more acidic than a pH of 5 and 100 times more acidic than a pH of 6.
The pH of bases is generally defined as greater than 7.00. Again as the pH increases the amount of base increases by a factor of 10 fold. A pH of 9 would be 10 times more basic than a pH of 8. Pure water has a neutral pH or a pH of 7.00. At that pH, the amount of acid is exactly balanced by the amount of base.
2006-12-12 12:27:19 · answer #1 · answered by docrider28 4 · 0⤊ 0⤋
PH is based on a scale of 14.
Less than 7 is an acid,
7 is neutral,
and more than 7 is a base.
2006-12-12 12:33:13 · answer #2 · answered by spens 2 · 0⤊ 0⤋
acids are below 7, bases above 7, and 7 is neutral
2006-12-12 12:36:23 · answer #3 · answered by jekelly90 2 · 0⤊ 0⤋
i belive neutral is 7, anything lower is an acid, anything higher is a base
2006-12-12 12:23:27 · answer #4 · answered by Cronic 2 · 1⤊ 0⤋