1. Hydrates Stoichiometry February 6, 2018
Learning Target: I can determine the ratio of water in a hydrate through experimental results

2. Do Now (4 min)
February 6, 2018
Learning target: I can determine the ratio of water in a hydrate through experimental results
Do Now: (Answer on your Do Now Sheet)
In FeCl3 * 3H2O, there are 3H2O molecules for 1 FeCl3 molecule. What do you think the * means?
Learning Target: I can determine the ratio of water in a hydrate through experimental results

3. Announcement Between now and February 15 (Thurs): 1 pop quiz left!
Stoichiometry exam: Thursday, February 15th
Lab 13: Hydrates – TOMORROW!!! Wednesday, February 7th
Homework: Complete the worksheet
Complete the Pre-Lab for Lab 13 Due Tomorrow!
Learning Target: I can determine the ratio of water in a hydrate through experimental results

4. February 6, 2018
Hydrates
7 minutes: Read the excerpt at the top and look over the example.
Learning Target: I can determine the ratio of water in a hydrate through experimental results

5. Hydrates Hydrate: Anhydrate: February 6, 2018
Learning Target: I can determine the ratio of water in a hydrate through experimental results

6. DEMO What do you see? What do you hear? What’s happening?
February 6, 2018
DEMO
What do you see? What do you hear? What’s happening?
Learning Target: I can determine the ratio of water in a hydrate through experimental results

7. February 6, 2018
Hydrates
A calcium chloride hydrate has a mass of 4.72 g. After heating for several minutes the mass of the anhydrate is found to be 3.56 g. Use this information to determine the formula for the hydrate. Calcium chloride: CaCl2
Learning Target: I can determine the ratio of water in a hydrate through experimental results

8. February 6, 2018
Hydrates - Example
1) Find the mass of the water driven off: 2) convert the mass of anhydrate to moles: 3) convert the mass of water to moles: 4) find the mole H2O to mole CaCl2 ratio: Since the compound contains 2 moles of water for every 1 mole of anhydrate the formula is CaCl2 · 2 H2O
Learning Target: I can determine the ratio of water in a hydrate through experimental results

9. Part D: Hydrates and Percent Composition
February 6, 2018
Part D: Hydrates and Percent Composition
Question 5: minute: Determine the mass of just the H2O’s:
FeCl3 * 6H2O
b) CuSO4 * 5H2O
Learning Target: I can determine the ratio of water in a hydrate through experimental results

10. Part D: Hydrates and Percent Composition
February 6, 2018
Part D: Hydrates and Percent Composition
Question 6: Determine the percent composition of H2O:
FeCl3 * 6H2O
Learning Target: I can determine the ratio of water in a hydrate through experimental results

11. Part D: Hydrates and Percent Composition
February 6, 2018
Part D: Hydrates and Percent Composition
Question 6: Determine the percent composition of H2O: PAIRS
CuSO4 * 5H2O : ___________________________
c) BaCl2 * 2H2O : ____________________________
d) MgSO4 * 7H2O : ___________________________
Learning Target: I can determine the ratio of water in a hydrate through experimental results

12. February 6, 2018
Part D: Practice!
IN PAIRS: Solve question 7 (sorry it says 6  ) Use the example to help you solve the question. Be careful with your values.
Learning Target: I can determine the ratio of water in a hydrate through experimental results

13. February 6, 2018
Exit ticket (3 min)
EXIT TICKET: complete on a separate sheet of paper:
What is the percent composition of the H2O in FeCl3 * 5H2O ?
Learning Target: I can determine the ratio of water in a hydrate through experimental results