Chemistry Honors – Class 31

Dates

• Period A – Friday, November 1st
• Periods C, D – Monday, November 4th

Solubility Quiz

• students given names of formulas
• must write formulas
• must determine solubility on water
• must identify the rule(s) that apply

Clarification of Solubility Rules (from textbook page 172)

1. All nitrate (NO₃^-1) salts are soluble
2. All alkali metal salts and ammonium (NH₄⁺¹) salts are soluble
3. Most halide (group 17) salts are soluble (exceptions: Ag⁺¹, Pb⁺², Hg₂⁺²)
4. Most sulfate (SO₄^-2) salts are soluble (exceptions: Ba⁺², Pb⁺², Ca⁺²)
5. Hydroxide (OH^-1) salts not soluble (exceptions: group 1 and group 2)
6. Salts of sulfides (S^-2), carbonates (CO₃^-2) and phosphates (PO₄^-3) are not soluble

Ionic Reaction Writing Practice

• Write the formulas for the following
  • (A) silver nitrate
  • (B) potassium iodide
  • (C) zinc nitrate
  • (D) copper (II) chloride
  • (E) sodium chloride
  • (F) lead (II) nitrate
  • (G) potassium sulfate
• Determine all of the possible combinations
• Write the full molecular, full ionic, net ionic reactions for each combination

Homework

• Prepare for the Precipitate Lab (lab sheet in shared folder)
• Write all preparation on paper and bring to lab next period