Practice pH in Chemistry
Use these practice problems to test your method after reviewing the concept explanation and worked examples.
Quick Recap
A logarithmic scale from 0 to 14 that measures the concentration of hydrogen ions in a solution, indicating how acidic or basic it is.
A number that tells you: acid (low), neutral (7), base (high).
Example 1
easyCalculate the pH of a solution with [\text{H}^+] = 1.0 \times 10^{-4}\,\text{M}.
Example 2
mediumA solution has pH = 9. Calculate [\text{H}^+] and [\text{OH}^-].
Example 3
mediumWhat is the pH of a 0.001\,\text{M} HCl solution? (HCl is a strong acid.)
Example 4
mediumCompare a solution with pH 2 and a solution with pH 5. How many times greater is the hydrogen-ion concentration in the pH 2 solution?