Question

Importance of pH value

Answer 1

Answer:

to check acidic or basic nature

Answer 2

pH  values gives a lot of information about the substance. It shows different colours at the different values of pH.

Explanation:

• pH value depends upon the  number of Hydrogen ions in the solution.

• The pH values are measured from 0 to 14.

• The  pH of substance like pure water is 7, which is  a neutral value.

• The pH of acids like hydro-chloric acid, sulphuric acid it is less than 7.

• The pH of base like sodium hydroxide is more than 7.

• The letter p in pH  is a German word which means 'potenz' and H denotes  the concentration of hydrogen ions.

learn more about pH

Why glass electrode cannot be used for solution of ph above 9.0?

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Calculate the pH of a 2 L solution containing 10 mL of 5 M acetic acid and 10 mL of 1 M sodium acetate. The pKa for acetic acid is 4.76.

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