Multiple Choice
What would be the molar concentration of hydroxide ions, [OH^-], in a pH 9.5 aqueous solution?
17. Acid and Base Equilibrium
The pH Scale
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Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
Which of the following accurately describes the pH scale?
A
The pH scale is used to determine the boiling point of a solution.
B
The pH scale ranges from 0 to 10, with 5 being neutral.
C
The pH scale measures the concentration of hydroxide ions in a solution.
D
The pH scale ranges from 0 to 14, with 7 being neutral.
Verified step by step guidance1
Understand that the pH scale is a measure of the acidity or basicity of a solution, not related to boiling points.
Recognize that the pH scale typically ranges from 0 to 14, where 7 is considered neutral. Values below 7 indicate acidity, and values above 7 indicate basicity.
The pH scale is logarithmic and is used to measure the concentration of hydrogen ions (H⁺) in a solution, not hydroxide ions (OH⁻).
A neutral pH of 7 corresponds to pure water at 25°C, where the concentration of H⁺ ions equals the concentration of OH⁻ ions.
The correct description of the pH scale is: 'The pH scale ranges from 0 to 14, with 7 being neutral.'
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