Multiple Choice
In aqueous solution, what does pH measure?
2
views
17. Acid and Base Equilibrium
The pH Scale
Struggling with General Chemistry?
Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
On the pH scale, what does pH describe?
A
The concentration of hydroxide ions only
B
The density of a solution
C
The rate at which a reaction occurs in solution
D
The acidity of a solution, based on the concentration of hydrogen ions
Verified step by step guidance1
Understand that pH is a measure used to describe the acidity or basicity of a 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: \(\mathrm{pH} = -\log_{10}[\mathrm{H}^+]\), where \([\mathrm{H}^+]\) is the molar concentration of hydrogen ions.
Recognize that a lower pH value indicates a higher concentration of hydrogen ions, meaning the solution is more acidic, while a higher pH indicates a lower concentration of hydrogen ions, meaning the solution is more basic or alkaline.
Note that pH does not directly describe hydroxide ion concentration, solution density, or reaction rates, but specifically the acidity based on hydrogen ion concentration.
Related Videos
Related Practice
