Question

How can the ph of a solution be determined ?

Answer 1

The solution can be tested with a universal indicator. The universal indicator shows us the different hydrogen ion concentration for different solutions by showing different colors for different solutions.

Answer 2

The pH of a solution can be determined by pH paper or the concentration of hydrogen ions.

• The pH of a solution can be determined by a pH paper. A pH paper shows the acidic nature of a solution below 7 and the basic nature of a solution above 7. The neutral range lies at pH 7.
• Again if we determine the concentration of hydrogen ions in a solution then also pH can be determined using the below formula-
• $pH=-log[H^+]$.