Long Extended response

Question 1

Explain the usefulness of Arrhenius’s and Bronsted/Lowry’s theory for classifying acids and bases. (Structure)

Answer 1

1. Arrhenius’s def of acids and bases
2. Advantages + chemical equation
3. Limitations - convenient and useful in explaining acids and bases
4. Bronsted Lowry definition
5. Why was it better than Arrhenius
6. Limitations + chemical equation
7. Concluding statement

Question 2

What was Arrhenius’s definition?

Answer 2

Acids are substances that ionise to produce H+ ions in aq. solns. Bases are substances that dissociate to produce OH- ions in aqueous solns. This theory proved to be useful as it distinguished the strong and weak acidss in terms of the degree of ionisation, and was able to explain neut. of H+ from acids and OH- from bases. (chem equation)