2007-03-02 05:37:15 · 6 answers · asked by balaji n 1 in Science & Mathematics ➔ Chemistry
pH = -log[H+]
It give us a measure of the acidity of the solution by knowing the pH based on some "knowns" that we have already calculated [H+] for (pH strips).
So, you test a solution with a pH strip and it changes a certain color. You compare your strip to the range printed on the pH box, and you can estime the [H+] in your solution.
2007-03-02 05:41:01 · answer #1 · answered by Dr Dave P 7 · 0⤊ 0⤋
pH is the defined as the negative logarithm of the H+(hydrogen ion) concentration,(pH=-log[H+],where [H+] is the H+ concentration),of a solution.pH shows how acidic a solution is.The pH of a solution can be determined with a pH indicator,a weak organic substance which changes color in an acidic or basic(alkaline)solution.Example are methyl orange,litmus strip,phynolphthalene.
2007-03-02 06:15:38 · answer #2 · answered by shark 1 · 0⤊ 0⤋
Ph refers to the level of acidity or basicity. Soultions with lower PH levels are acidic and higher PH levels base. There is a formula to figure out what a PH level is but it is very advanded and complecated. This is a formula: pH=-log10(ah+). The "ah" is the activity of h+ ions. In dilute solutions there is a different equation. pH=-log10((h+)/1mol/L))=log10[ h+] This gives you the molarity.
2007-03-02 05:50:28 · answer #3 · answered by Anonymous · 0⤊ 0⤋
pH is the measure of acidity or basicity of a solution.
2007-03-02 05:40:55 · answer #4 · answered by blumonkee93 2 · 0⤊ 0⤋
it is the measure used to indicate the acidity or basicity of a solution, definition is pH = - log [H+]
2007-03-02 05:54:10 · answer #5 · answered by wally 3 · 0⤊ 0⤋
It is a number by which negative logarithmic power of 10 has to be raised, in order to express the hydrogen ion concentration in a solution.
2007-03-03 02:24:05 · answer #6 · answered by ash 2 · 0⤊ 0⤋