The pH Scale Practice Problems
Under normal conditions, how can the pH of a solution be calculated given the [OH−] in the solution?
Explain why adding a base to pure water causes the concentration of hydronium ions (H3O+) to decrease.
Rio Tinto is a highly acidic river in southwestern Spain. This river has an average pH of 2.00. What are the [H3O+] and the [OH−] of the river?
Determine the [H3O+] of a solution of Rochelle salt (potassium sodium tartrate) if its [OH−] is 3.2×10−7 M.
The choroid plexus produces the cerebrospinal fluid, which contains 5.0×10−8 M H3O+ ions. Determine the pH of the cerebrospinal fluid.
Which of the following solutions is more acidic: solution Y with a pH of 8.3 or solution Z with a pH of 6.7?
Identify which of the following solutions is more acidic: solution X with a pH of 4.5 or solution Y with a pH of 5.5.
Determine the pH of a solution if the hydronium ions (H3O+) present in the solution have a concentration of 0.0005 M.
Provide the pH of a solution if the concentration of OH− ions in the solution is 6.7×10−7 M.
Give the pH of a solution if the concentration of OH− ions in the solution is 5.33×10−4 M.
The blood plasma pH of a patient is 8.67. Calculate its [H3O+] and express with two significant figures.
At 25°C, An aqueous solution in a beaker has [OH-] = 8.97x 10-2M. Which statement about the solution is true?
I. The solution has [H3O+] = 1.11x10-13 M
II. The solution has a pH of 1.05
III. The solution is basic.
We are given three solutions
Solution A: [OH-] = 2.43 × 10–7 M
Solution B: [H3O+] = 7.79 × 10–9 M
Solution C: [OH-] = 0.000349 M
a. What is the [H3O+] for solution A?
b. What is the [OH-] for solution B?
c. What is the [H3O+] for solution C?
d. Which of the three solutions is the most basic?