Inquiry question: How does solubility relate to chemical equilibrium?
Students:
● describe and analyse the processes involved in the dissolution of ionic compounds in water
● investigate the use of solubility equilibria by Aboriginal and Torres Strait Islander Peoples when removing toxicity from foods, for example:
– toxins in cycad fruit
● conduct an investigation to determine solubility rules, and predict and analyse the composition of substances when two ionic solutions are mixed, for example:
– potassium chloride and silver nitrate
– potassium iodide and lead nitrate
– sodium sulfate and barium nitrate (ACSCH065)
● derive equilibrium expressions for saturated solutions in terms of Ksp and calculate the solubility of an ionic substance from its Ksp value
● predict the formation of a precipitate given the standard reference values for Ksp
Extract from Chemistry Stage 6 Syllabus © 2017 NSW Education Standards Authority (NESA)