Multiple Choice
On the pH scale, what does a solution with indicate at ?
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17. Acid and Base Equilibrium
The pH Scale
Multiple Choice
In general chemistry, what does the pH scale measure in an aqueous solution?
A
The concentration of hydroxide ions, expressed as
B
The hydrogen ion concentration, expressed as
C
The temperature of the solution in degrees Celsius
D
The total dissolved salt concentration (salinity) of the solution
Verified step by step guidance1
Understand that the pH scale is a measure of the acidity or basicity of an aqueous solution.
Recall that pH is defined based on the concentration of hydrogen ions (H\(\textsuperscript{+}\)) in the solution.
Use the formula for pH, which is given by \(pH = -\log([H^{+}])\), where \([H^{+}]\) is the molar concentration of hydrogen ions.
Recognize that a lower pH value indicates a higher concentration of hydrogen ions (more acidic), while a higher pH value indicates a lower concentration of hydrogen ions (more basic).
Note that the pH scale does not directly measure hydroxide ion concentration, temperature, or salinity, but specifically the hydrogen ion concentration.
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