Question

definition of pH scale​

Answer 1

Answer:

In chemistry, pH is a scale used to specify the acidity or basicity of an aqueous solution. Acidic solutions are measured to have lower pH values than basic or alkaline solutions. The pH scale is logarithmic and inversely indicates the concentration of hydrogen ions in the solution.

Explanation:

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Answer 2

Answer:

pH :-

The strength of any solution say acid or base is measured by the presence of (H+) ions or (OH-) ions concentration using a parameTer called pH scale.

pH of a solution is defined as the negative logarithm of H+ ions in the solution.

pH = -log[H+] = log(1/H+)

• If the pH is less than 7,it is acidic and if the pH is more than 7,it is basic. If pH is 7, it is neutral.

• pH of a solution can be measured by reagents which change their colours when contacted with acids or bases but they change their colours if it is a neutral solution.

If the H+ ions are more than OH- ions then it is an acid and if OH- ions are more than H+ ions then it is a base but if both are in same number then it is a neutral solution.

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