Work through the list without notes. If you cannot do a statement, follow its link, then come back. Guide = study guide; Practice = practice questions.
Understanding
- I can name the six strong acids and the group 1 and group 2 hydroxides as strong bases. (Guide: “What makes an acid or base strong”)
- I can write a single-arrow ionisation equation for a strong acid and a dissociation equation for a strong base. (Guide; Figure 1)
- I can explain the difference between a strong acid and a concentrated acid. (Guide: “Strong is not the same as concentrated”)
- I can explain why only the first proton of H₂SO₄ counts as fully ionised. (Guide: FAQ and strong acid table)
Calculation
- I can find the pH and pOH of a strong acid solution from its concentration. (Guide: Worked example 1; Practice Q1)
- I can find [OH⁻], pOH and pH for a group 1 or group 2 hydroxide, using the correct factor. (Guide: Worked example 2; Practice Q2, Q6(a))
- I can list every species in a strong acid or strong base solution with its concentration, including the minor ion from K_w. (Guide: Worked example 1; Practice Q3, Q6(c))
- I can calculate pH after a dilution, or work out the dilution needed for a target pH. (Guide: Worked example 3; Practice Q4)
- I can find the pH when two strong acids are mixed, using total moles and total volume. (Practice Q5)
- I can calculate the mass of a strong base needed to make a solution with a given pH. (Practice Q6(d))
Reasoning
- I can justify why two strong bases at the same concentration can have different pH values. (Practice Q6(b))
- I can explain why pH = −log c fails for a very dilute strong acid, and why its pH stays below 7. (Guide: “A very dilute strong acid”; Practice Q7)
All ticked? Move on to Topic 8.3, Weak Acid and Base Equilibria, or return to the course roadmap.