Assignment: Dynamic Equilibrium
Pre-Lab
1. Write the balanced chemical equation for the reaction between Na2SO4(aq) and CaCl2(aq).
2. Explain the use of a solution of Ba(NO3)2(aq) to test the filtrate.
3. Write a balanced equation for the reaction used to test the filtrate.
4. Describe what you expect to occur when the products for the four trials are tested. Make reference to your understanding of equilibrium systems using appropriate terms and conventions.
5. Explain why the mass of precipitate did not differ in the second, third, and fourth trials.
6. Explain the results obtained for the test on the filtrate.
7. How do the observations from this investigation support the concept of an equilibrium system having a forward and a reverse reaction?