pH and pOH Calculations Worksheet
A Grade 12 Chemistry worksheet focusing on pH and pOH calculations, including strong acids, bases, and ion concentrations.
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pH and pOH Calculations
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Read each question carefully and provide the most accurate answer. Show all your work for calculation problems. Use appropriate significant figures and units.
Refer to the pH scale below when answering the questions.
1. The pH scale ranges from 0 to , with 7 being .
2. A solution with a pH of 2 is considered a strong .
3. The sum of pH and pOH for any aqueous solution at 25°C is always .
1. What is the pH of a 0.001 M HCl solution?
1
2
3
4
2. If a solution has a pOH of 5, what is its pH?
5
7
9
14
1. Calculate the pH of a 0.05 M NaOH solution.
2. What is the [H+] concentration in a solution with a pH of 8.5?
3. A solution has a [OH-] concentration of 2.5 x 10⁻⁴ M. Calculate its pOH and pH.
1. A high pOH value indicates a strong acid.
True
False
2. Pure water at 25°C has equal concentrations of H+ and OH- ions.
True
False