2007-06-15 20:06:46 · 7 answers · asked by Anonymous in Science & Mathematics ➔ Biology
The acidity of a solution is measured by the pH number, which corresponds to the negative log (base 10) of the concentration of the H+ (or H3O+ in a water solution) ions.
pH = -log[H+]
In pure water, [H+] = [OH-] = 10^(-7)
if pH is <7, the solution is acidic, which means :
[H+] > [OH-]
if pH is >7, the solution is basic, or alkaline, which means :
[H+] < [OH-]
2007-06-15 21:19:36 · answer #1 · answered by Jesus is my Savior 7 · 0⤊ 0⤋
The hydrogen ion determines the acidity of the solution. The amount of hydrogen ions and the amount of hydroxide ions in a solution are complementary; that is the more hydrogen ions the less hydroxide ions they are.
There are also ions that contribute to the acidity/basicity of the solution by reacting with water to form hydrogen ions or hydroxide ions. Examples of these ions are ammonium ion and cyanide ion, typically conjugates of weak acids and bases
2007-06-15 21:38:38 · answer #2 · answered by chemfreak018 1 · 0⤊ 0⤋
the H+ ions represent the acidity of a solution, where as OH- usually represent the basic solution. meaning....for example, HCl, hydrochloric acid, has a H+ ion and a Cl- ion...meaning its acidic. NaOH has a Na+ and a OH- ion..meaning its baic...hopefully it helps...
2007-06-16 11:53:02 · answer #3 · answered by heyy 3 · 0⤊ 0⤋
the positive hydrogen ions realesed. it is tested by the "pH" value. as the value decreases than 7 the acidity increases. the range of the pH value is 1-14
2007-06-15 20:14:48 · answer #4 · answered by Anonymous · 0⤊ 0⤋
Hydrogen ions and Hydroxide ions, generally.
2007-06-15 20:15:10 · answer #5 · answered by Labsci 7 · 0⤊ 0⤋
the +ve H2 ions or hydronium ions or H3O+
2007-06-15 20:34:48 · answer #6 · answered by siddarth k 1 · 0⤊ 0⤋
hydronium (H+)
2007-06-17 06:19:23 · answer #7 · answered by mitu 2 · 0⤊ 0⤋