The pH of a solution with [H₃O⁺] = 2.3 × 10⁻⁴M is 3.64 means the solution is acidic in nature.
pH of any solution is define as the negative logarithm of the concentration of hydronium ion as:
pH = -log[H⁺]
Given that concentration of H₃O⁺ or H⁺ = 2.3 × 10⁻⁴M
On putting values, we get
pH = -log(2.3 × 10⁻⁴)
pH = -(-3.64) = 3.64
Hence required pH value is 3.64.
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