PH GENERAL EXAM
PRACTICE QUESTIONS
AND CORRECT ANSWERS
GRADED A+ 2025-2026
A solution containing HCl would likely have - ANS-a low pH and a high pOH.
The pH of a solution decreases by 2.0. How does the hydronium ion concentration of
the solution change? - ANS-increases to 100 times the original concentration
Which describes an alkaline solution? - ANS-acidic (NOT CORRECT)
Which of these correctly defines the pH of a solution? - ANS-the negative log of the
hydronium ion concentration
What is the pH of a solution with [H+] = 1.25 mc015-1.jpg 10-10 M?
Use mc015-2.jpg. - ANS-9.90
Which statement best describes the pH of pure water? - ANS-It is neutral because the
concentration of hydronium ions equals that of hydroxide ions.
How can the pH of a solution be calculated if the pOH is known? - ANS-by subtracting
the pOH from 14
What is the equilibrium constant of pure water at 25°C? - ANS-10-14
PRACTICE QUESTIONS
AND CORRECT ANSWERS
GRADED A+ 2025-2026
A solution containing HCl would likely have - ANS-a low pH and a high pOH.
The pH of a solution decreases by 2.0. How does the hydronium ion concentration of
the solution change? - ANS-increases to 100 times the original concentration
Which describes an alkaline solution? - ANS-acidic (NOT CORRECT)
Which of these correctly defines the pH of a solution? - ANS-the negative log of the
hydronium ion concentration
What is the pH of a solution with [H+] = 1.25 mc015-1.jpg 10-10 M?
Use mc015-2.jpg. - ANS-9.90
Which statement best describes the pH of pure water? - ANS-It is neutral because the
concentration of hydronium ions equals that of hydroxide ions.
How can the pH of a solution be calculated if the pOH is known? - ANS-by subtracting
the pOH from 14
What is the equilibrium constant of pure water at 25°C? - ANS-10-14
