pH isameasureoftheamountofhydrogenionactivity(H+)inasolution,andthereforeitsalkalinityoracidity. Even though pH is a unitless value but it is not a random scale. The value is due to the activity of H+ ion in the solution.pHis described as “the negative of the logarithm of the molar hydronium-ion concentration.”
pH Formula is expressed as
\(\begin{array}{l}pH = -log [H_{3}0^{+}]\end{array} \)
The pH Formula can also be expressed as
See Also
Country context | UNIDOLearn What pH Stands For and How the Term OriginatedpH Scale and Acidity - Properties and Limitaions of pH ScaleCHAP 2.pmd\(\begin{array}{l}pH = -log [H^{+}]\end{array} \)
pH Formula Related Problems
Problem 1:Find out thepH of the solution in which the concentration of hydronium ion is 8.0 ×10-8M.
See Also
What is Coffee Acidity?Answer:
The hydronium ion concentration is 8.0 × 10-8M
\(\begin{array}{l}pH = -log [H_{3}0^{+}]\end{array} \)
pH = – log[8.0 × 10-8]
pH = 7.09
