Chapter 9 Salts_for students

CHAPTER 9 SALTS

Chapter 9 Salts • 9.1 What Are Salts? • 9.2 How Are Salts Prepared?

9.1 What Are Salts? ● Learning Outcome(s) ● Describe the general rules of solubility for common salts in water.

● A salt is an ionic compound that consists of a cation (positive ion) and an anion (negative ion). 9.1 What Are Salts? Textbook Page 166

9.1 What Are Salts? Solubility of Salts in Water • Solubility refers to the ability of a solute to dissolve in a solvent. • Different salts have different solubilities. Salts may be soluble or insoluble. • The solubility of a salt must be determined before we decide on a method to prepare the salt. Textbook Page 166

9.1 What Are Salts? Solubility of Salts in Water Textbook Page 166 SPA(N) Bio Phy Chem SLC actually, it’s all Group 1 salts!

9.1 What Are Salts? Textbook Page 166 Solubility of Salts in Water Soluble base Insoluble base sodium hydroxide, NaOH potassium hydroxide, KOH calcium hydroxide, Ca(OH)2 *ammonium hydroxide (SPA salts) all hydroxides sodium oxide, Na2O potassium oxide, K2O calcium oxide, CaO all oxides

Applications of Solubility Rules

Summary of Lesson • Salts are ionic compounds. • Not all salts are soluble in water. • The solubility of a salt must be determined before we can choose a suitable method to prepare the salt.

Chapter 9 Salts • 9.1 What Are Salts? • 9.2 How Are Salts Prepared?