Multiple Choice
Which statement correctly describes the relationship between pH and hydrogen ion concentration in aqueous solution?
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17. Acid and Base Equilibrium
The pH Scale
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On the standard pH scale used in general chemistry, the pH of aqueous solutions typically ranges from what value to what value?
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Verified step by step guidance1
Understand that the pH scale is a measure of the acidity or basicity of an aqueous solution, defined as \(\mathrm{pH} = -\log[\mathrm{H}^+]\), where \([\mathrm{H}^+]\) is the concentration of hydrogen ions in moles per liter.
Recognize that pure water at 25°C has a hydrogen ion concentration of \$1 \times 10^{-7}$ M, which corresponds to a neutral pH of 7.
Know that the pH scale typically ranges from 0 to 14, where pH 0 corresponds to a very acidic solution (high \([\mathrm{H}^+]\)) and pH 14 corresponds to a very basic solution (low \([\mathrm{H}^+]\)).
Recall that this range comes from the autoionization of water and the concentration limits of hydrogen ions in aqueous solutions under normal conditions.
Therefore, the standard pH scale used in general chemistry typically ranges from 0 to 14.
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