Multiple Choice
On the pH scale, what does pH describe?
39
views
17. Acid and Base Equilibrium
The pH Scale
Multiple Choice
On the pH scale, what does pH measure in an aqueous solution?
A
The hydroxide ion concentration,
B
The molarity of dissolved salt (ionic strength) in the solution
C
The temperature of the solution in degrees Celsius
D
The hydrogen ion concentration,
Verified step by step guidance1
Understand that pH is a measure used to describe 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.
The mathematical definition of pH is given by the formula: \(\text{pH} = -\log_{10} [\text{H}^+]\), where \([\text{H}^+]\) 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 indicates a lower concentration of hydrogen ions (more basic or alkaline).
Note that pH does not directly measure hydroxide ion concentration, ionic strength, or temperature, but specifically the hydrogen ion concentration in the solution.
Related Videos
Related Practice
