Which of these solutions has the highest concentration of H+?solution A, pH = 12.5solution B, pH = 7.0solution C, pH = 2.5

A lower pH means a higher concentration of H⁺ ions. Solution C has the lowest pH, 2.5, compared with 7.0 for solution B and 12.5 for solution A, so it has the highest H⁺ concentration.

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