Theories of Acids and Bases structured questions · GCE A-Level H1 Chemistry
Practise written answers for Theories of Acids and Bases, with marking guidance for each question.
Learning objectives
- show understanding of, and apply the Arrhenius theory of acids and bases
- show understanding of, and apply the Brønsted-Lowry theory of acids and bases, including the concept of conjugate acids and conjugate bases
- explain qualitatively the differences in behaviour between strong and weak acids and bases in terms of the extent of dissociation
- explain the terms pH; Ka; Kb; Kw [the relationship Kw = KaKb is not required]
- calculate [H+(aq)] and pH values for strong acids and strong bases
- explain the choice of suitable indicators for acid-base titrations, given appropriate data, in terms of the strengths of the acids and bases
- — explain how buffer solutions control pH
- — describe and explain the uses of buffer solutions including the role of CO32− /HCO3− in maintaining pH in oceans, and how the rapid increase in atmospheric carbon dioxide gas contributed to ocean acidification
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