Which pH represents a solution that has the highest concentration of hydroxide ions?

Question

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pH 14 represents a solution that is strongly basic or alkaline. This means that it has a high concentration of hydroxide ions (OH-) as they are responsible for the basic nature of the solution. pH 14 is the highest possible pH value, which means it has the highest concentration of hydroxide ions. In contrast, pH 1 represents a strongly acidic solution with a high concentration of hydrogen ions (H+), while pH 7 represents a neutral solution with equal concentrations of hydrogen ions and hydroxide ions. pH 10 represents a slightly basic solution with a lower concentration of hydroxide ions than pH 14.

Which PH Represents a Solution That Has the Highest Concentration