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Between pH two and pH six, which solution will be more acidic?

Answer and explanation

Correct answer: The one with pH two

Acidity increases as pH decreases because lower pH corresponds to a greater hydrogen-ion concentration. Since 2 is lower than 6, the solution with pH 2 is more acidic, so option A is correct. On the logarithmic pH scale, the difference of four units represents a 10⁴, or 10,000-fold, difference in hydrogen-ion concentration, assuming comparable conditions.

Related tags

Ph ScaleAcidity ComparisonHydrogen-Ion ConcentrationLogarithmic ScaleAcidsBasesAnd SaltsAcids Bases And SaltsChemical Substances – Nature And BehaviourChemical Substances Nature And Behaviour

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