Question

define pH scale ..........​

Answer 1

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The pH scale is to determine whether a water-based solution is acid, alkaline or neutral.

The pH scale measures how strong an acid or alkali is. If it is midpoint on the scale, it is considered neutral – the concentration of hydrogen ions is equal to the concentration of hydroxide ions.

The pH scale runs from 0 to 14, with 7 being a neutral pH, anything under 7 being acidic and anything over 7 being alkaline (sometimes referred to as basic).

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Answer 2

PH scale is Major of acidity or basicity of a solution.

it is defined as a negative logarithm of the concentration (mole per litre) of hydrogen ion which it contains .

pH = - log[H+] = log1/[H+]

or

[H+] = 1 * 10^-ph

ph value of 7 is neutral solution(water) greater than 7 for basic solution in less than 7 for acidic solution.