Chemistry 30
CH30-EQ3
Observe and analyze phenomena related to acid-base reactions and equilibrium.
SI, DM
Indicators for this outcome
| (a) | Identify examples of acid-base reactions in the manufacture and use of consumer products (e.g., foods, cosmetics, pharmaceuticals and cleaners), industrial processes (e.g., resource extraction and refining, mine tailings), agricultural processes (e.g., fertilizer and pesticide application) and First Nations and Métis practices such as tanning hides. (STSE, K) |
| (b) | Discuss the historical development and limitations of theories, including Arrhenius, Brønsted-Lowry and Lewis, which explain the behaviour of acids and bases. (STSE, K) |
| (c) | Identify conjugate acids and bases formed in acid-base reactions using Brønsted-Lowry theory, including substances which are amphiprotic (amphoteric). (S, K) |
| (d) | Differentiate between strength (strong versus weak) and concentration (concentrated versus dilute) when referring to acids and bases. (S) |
| (e) | Classify strong and weak acids and bases using the magnitude of Ka and Kb. (S, K) |
| (f) | Discuss the relationship between [H+]/[H3O+] and [OH-] in the dissociation of water, to explain Kw and perform relevant calculations. (K, S) |
| (g) | Solve problems involving pH, pOH, [H+]/[H3O+], [OH-], Kw, Ka and Kb. (S) |
| (h) | Explain how acid-base indicators function chemically, using Le Chatelier's principle. (K, STSE) |
| (i) | Estimate the pH of solutions using acid-base indicator solutions and indicator papers. (S, K) |
| (j) | Design and carry out an experiment to differentiate between weak and strong acids using indicators. (S, K) |
| (k) | Perform acid-base titrations and relevant calculations for multiple ratios of [H+]/[H3O+] to [OH-], including those for reactions that either reach the endpoint/equivalence point or represent over-titration. (S) |
| (l) | Interpret pH titration curves for various combinations and strengths of acids and bases, by identifying endpoints and choosing appropriate indicators. (STSE, S) |
| (m) | Discuss the role of acid-base buffering as an aspect of maintaining homeostasis in biological systems. (K) |
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