Course Profile - Curriculum Services Canada

Strand(s) & Learning Expectations
Strand(s): Chemical Systems and Equilibrium
Learning Expectations
CS2.01 - use appropriate vocabulary to communicate ideas, procedures, and results related to chemical
systems and equilibrium (e.g., homogeneous, common ion, K a value);
CS2.03 - carry out experiments to determine equilibrium constants (e.g., K eq for iron [III] thiocyanate, K sp
for calcium hydroxide, K a for acetic acid);
CS2.04 - calculate the molar solubility of a pure substance in water or in a solution of a common ion,
given the solubility product constant (K sp ), and vice versa;
CS2.05 - predict the formation of precipitates by using the solubility product constant;
CS2.06 - solve equilibrium problems involving concentrations of reactants and products and the
following quantities: K eq , K sp , K a , K b , pH, pOH;
CS3.02 - identify effects of solubility on biological systems (e.g., kidney stones, dissolved gases in the
circulatory system of divers, the use of barium sulfate in medical diagnosis);
SIS.01 - demonstrate an understanding of safe laboratory practices by selecting and applying appropriate
techniques for handling, storing, and disposing of laboratory materials, and using appropriate personal
protection;
SIS.02 - select appropriate instruments and use them effectively and accurately in collecting observations
and data;
SIS.03 - demonstrate the skills required to plan and carry out investigations using laboratory equipment
safely, effectively, and accurately;
SIS.08 - express the result of any calculation involving experimental data to the appropriate number of
decimal places or significant figures;
SIS.09 - select and use appropriate SI units;
SIS.10 - identify and describe science-and technology-based careers related to the subject area under
study.
Prior Knowledge & Skills
• Quantities in Chemical Reactions and Solutions and Solubility from SCH3U.
Planning Notes
• Review and follow all local Board regulations for the safe handling and disposal of chemicals.
• Gather materials for the following Activities: 1.3.2-silver acetate or lead(II) chloride needs to be
prepared several days in advance of the activity; 1.3.4-ammonium hydroxide, ammonium chloride
and phenolphthalein and a petri dish.
• Have students prepare Act 1.3.2 24 hours in advance of making quantitative observations to ensure
that all the silver or lead(II) ions have had the opportunity to react.
• Due to toxic nature of lead(II) chloride, it is suggested that calcium hydroxide be used.
• Gather and prepare questions (and solutions) that incorporate practical applications and career
components for the following Activities: 1.3.3 and 1.3.4.
• Take proper safety precautions when using concentrated stock solutions.
• Prepare notes on the applications of solubility product constants.
Unit 1 - Page 9
• Chemistry – University Preparation