what do you mean by ph?

Answer 1

A measure of the acidity or alkalinity of a solution, numerically equal to 7 for neutral solutions, increasing with increasing alkalinity and decreasing with increasing acidity. The pH scale commonly in use ranges from 0 to 14.

Answer 2

pH a measure of acidity. It is equal to the reverse log of the concentration of H+. pH=-log [H+].

The pH scale range is from 0-14. Acidity increases as pH goes down and alkalinity increases as pH goes up. 7 is considered neutral pH.

Answer 3

pH is a measure of the acidity of a solution in terms of activity of
hydrogen ions (H+).

for dilute solutions activity can be substituted with molarity.


pH = -log(a H+) and for dilute solutions pH = -log[H+]

where (a H+) refers to activity of H+ ions & [H+] refers to the molarity of H+ ions

At 25 °C....

the pH scale ranges from 0-14.

Aqueous solutions with pH values lower than 7 are considered acidic, while pH values higher than 7 are considered basic.A neutral solution has a pH of 7.

The concept of pH scale was introduced by S.P.L. Sorensen.

The range of pH scale changes with change in temperature as the Kw (dissociation constant of water ) changes with temperature. as the temperatureis increased the value of Kw (dissociation constant of water ) increases and hence the range of pH scale changes and so the range of pH for acidity,alkalinity and the pH for neutral solution.

Answer 4

pH means power of hydrogen.

Answer 5

pH means -log of hydrogen ion concentration

Answer 6

pH is a measure of acidity or alkalinity in an aqueous solution.
http://en.wikipedia.org/wiki/%E2%81%A0pH

Answer 7

power of hydrogen