PART 6A- Solution Reference: Chapter 4 in textbook PART 6B-Precipitate Reference: Chapter 16.5-16.8 in the textbook
PART 6A PART 6A – Solution Solution Reference: Chapter 4 in textbook PART 6B – Precipitate Reference: Chapter 16 5 Reference: Chapter 16.5—16 8 in the 16.8 in the textbook 1
Solution Solute, Solvent, and Solution ●●●●●● ●●●●●● 十 ●0●o Sugar ●o●oa 00●0o● Water Solution Saturated solution and Solubility Saturated solution: Dynamic equilibrium Solubility: the maximum mass of a solute that can be dissolved in a solvent (100 g), and is temperature dependent 2
Solution z Solute, Solvent, and Solution z Saturated solution and Solubility Saturated solution: Dynamic equilibrium Solubility lubility:the maximum mass of a solute that can be dissolved in a solvent (100 g), and is temperature dependent. 2
Solubility Preparation, separation from solution Q: Which of these solutes' solubility are the most sensitive to temperature? Na2s04 Solubility VS Temperature for a variety of salts Ba(o3)2 H Ce2(S04)3 9H20 Na2HAsO4 0000000p0 Temperature 3
Solubility z Preparation, separation from solution Q: which of these solutes’ solubility are the most sensitive to temperature? sensitive to temperature? 3
Solubility and molarity Recapture: What is solubility? What is molarity? Q: At 25oC, the solubility of sodium chloride (Naci)in 100 g water is 36.0 g. When we put 30 g Nacl into 75 g water, what is molarity of this NacI solution?(Assuming the density of water and Nacl solution are both 1.0 g/mL)
Solubility and Molarity z Recapt re What is sol bilit ? What is Recapture: What is solubility? What is molarity? Q: At 25 oC, the solubility of sodium chloride (NaCl) in 100 g water is 36 0 g When we put 30 g (NaCl) in 100 g water is 36.0 g. When we put 30 g NaCl into 75 g water, what is molarity of this NaCl solution? (Assuming the density of water and NaCl solution are both 1 0 g/ml ) solution are both 1.0 g/ml.) 4
Electrolyte Electrolyte Compounds that conduct electricity when dissolved or melted Strong electrolyt Most of the solute dissociates into ion forms e.g. strong acids, strong bases, salts Weak electrolyte Most of the solute remains as molecule forms 5
Electrolyte z Elec o y e trolyte: Compounds that conduct electricity when dissolved or melted. z Strong electrolyte: Strong electrolyte: Most of the solute dissociates into ion forms. e.g. strong acids, strong bases, salts. z Weak electrolyte: Weak electrolyte: Most of the solute remains as molecule forms. 5