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Example 1:
Calculate the pH of a solution in which the concentration of the hydrogen ions is \(1.0×10^{–8}\) \(mol\) \(litre^{–1}\).
Solution:
Here, although the solution is extremely dilute, the concentration given is not of an acid or a base but that of \(H^+\) ions. Hence, the pH can be calculated from the relation:
Given:
\([H^+]=1.0×10^{–8}\) \(mol\) \(litre^{–1}\)
\(pH = –log_{10}10^{–8}\)
\(= –(–8×log_{10}10)\)
Example 2:
If the pH of a solution is \(4.5\), what is its pOH?
Solution:
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