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Which statement best describes the pH scale?
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17. Acid and Base Equilibrium
The pH Scale
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Which of the following ranges of pH values corresponds to a basic (alkaline) solution?
A
pH exactly 7
B
pH greater than 7 and up to 14
C
pH from 0 to 7
D
pH less than 7
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Recall that the pH scale measures the acidity or basicity of a solution, ranging from 0 to 14.
Understand that a pH of exactly 7 is considered neutral, meaning the concentration of hydrogen ions (H\_3O\^+) equals that of hydroxide ions (OH\^-).
Recognize that acidic solutions have pH values less than 7, indicating a higher concentration of hydrogen ions than hydroxide ions.
Know that basic (alkaline) solutions have pH values greater than 7, meaning the concentration of hydroxide ions is higher than that of hydrogen ions.
Therefore, the range of pH values corresponding to a basic solution is from just above 7 up to 14.
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