The pH of a solution of H₂SO₄ that has [H₃O⁺] is 5.45 × 10⁻⁵ M, is 4.26.
pH is define as the negative logarithm of the concentration of H⁺ or H₃O⁺ ions, and it is represented as:
pH = -log[H⁺]
Concentration of H₃O⁺ in H₂SO₄ solution = 5.45 × 10⁻⁵ M
pH of H₂SO₄ solution will be calculated as:
pH = -log(5.45 × 10⁻⁵)
pH = -(-4.26)
pH = 4.26
Hence required pH is 4.26.
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