Answer :
The pH of a solution of sulphuric acid that has hydronium ion concentration is 4.26.
How do we calculate pH?
pH of any solution is define as the negative logarithm of the concentration of H⁺ ion present in any solution, i.e.
pH = -log[H⁺]
In the question, it is given that:
Concentration of hydronium ion or H⁺ ion = 5.45×10⁻⁵ M
So, pH will be:
pH = -log(5.45×10⁻⁵)
pH = -(-4.26)
pH = 4.26
Hence required pH is 4.26.
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