A solution with pH 1 is more acidic than a solution with pH 4 by a factor of:

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Difference in pH = 3. Each pH unit is a 10-fold change in [H⁺]. So 10³ = 1000 times more acidic. [H⁺] at pH 1 = 10⁻¹ M, at pH 4 = 10⁻⁴ M. Ratio = 10⁻¹ / 10⁻⁴ = 10³ = 1000. pH scale is logarithmic; small changes mean large concentration differences.

A solution with pH 1 is more acidic than a solution with pH 4 by a factor of: MCQ with Answer and Explanation

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