Students write K eq expressions for a variety of equilibrium equations. Encourage students to work co-operatively to solve problems involving chemical equilibrium using the appropriate equilibrium expression. Note that students are not required to use the quadratic formula to solve problems on provincial or scholarship exams. However, this can be done as enrichment related to equilibrium calculations. Encourage logical, organized, and neat layout of calculations.
Students use spreadsheets to illustrate the quantitative nature of equilibrium.
Assessment focusses both on the correct solution and on students' ability to organize their work to show an understanding of the chemical principles leading to a solution. Circulate, commenting and providing feedback to students as they conduct their lab experiments. Encourage the students to coach one another when solving problems involving K eq expressions, and to assess each other's work based on their understanding. Students can make up problems and trade with their classmates to solve.