Comparing acids and their pH
Last updated: 15/11/2023
This complete PowerPoint lesson provides a useful outline of the differences between strong and weak acids, through two demonstrations, which may be practical demonstrations in the lab.
The accompanying classroom worksheet or homework activity helps students to review strong and weak acids, understand concentrations and dilutions and answer equations, and includes answers for self or peer marking.
Example questions from the classroom or homework worksheet:
- What is the difference between a concentrated acid and a weak acid?
- What is a strong acid?
- What is a weak acid?
- How can you dilute an acid?
- Explain why sulfuric acid (H2SO4) has a pH of 1.2 at 0.1 mol/dm3 and carbonic acid has a pH of 3.8 at 0.1 mol/dm3.
- Write an equation for ionisation of:
a. HCl
b. H2SO4
c. HNO3 (strong)
d. H2CO3 (weak)
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