Which of the following statements about pH is true?
A. The pH scale is a measure of oxygen ion concentration.
B. A single unit change on the pH scale is equivalent to a 1% change in hydrogen ion concentration.
C. An increase in hydrogen ion concentration means a decrease in pH scale units.
D. Basic pH levels are less than 7.
Answer:C
Which of the following statements about pH is true?
A. The pH scale is a measure of oxygen ion concentration. B. A single unit change on the pH scale is equivalent to a 1% change in hydrogen ion concentration. C. An increase in hydrogen ion concentration means a decrease in pH scale units. D. Basic pH levels are less than 7.