Multiple Choice
In general chemistry, what does the pH scale measure in an aqueous solution?
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17. Acid and Base Equilibrium
The pH Scale
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On the pH scale at , which pH value indicates an acidic solution?
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Verified step by step guidance1
Understand that the pH scale ranges from 0 to 14 at 25\degree C, where pH is a measure of the hydrogen ion concentration in a solution.
Recall that a pH value of 7 is considered neutral, meaning the concentration of hydrogen ions (H\textsuperscript{+}) equals the concentration of hydroxide ions (OH\textsuperscript{-}).
Recognize that pH values less than 7 indicate an acidic solution, where the concentration of H\textsuperscript{+} ions is greater than OH\textsuperscript{-} ions.
Note that pH values greater than 7 indicate a basic (alkaline) solution, where OH\textsuperscript{-} ions are more concentrated than H\textsuperscript{+} ions.
Therefore, any pH value below 7, such as 3, indicates an acidic solution.
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