Determining the State of Reactants and Products Lesson

Determining the State of Reactants and Products

Lesson Outline States of Elements States of Molecular Compounds States of Ionic Compounds Solubility

Physical States of Reactants and Products (g) Gas (l) Liquid (s) Solid (aq) Aqueous (dissolved in water)

Elements Use the periodic table to predict the state of elements. Fe = Fe(s) Solid O 2 = O 2(g) Gas

Molecular Compounds Can be gas, Liquid and Solid. **Use common experience if not given** Gas (usually at room temperature) CO 2(g) Liquid H 2 O(l) Solid C 6 H 12 O 6(s) Sugar

Acids and Bases Are always aqueous (dissociated in water). Hydrochloric Acid HCl(aq) Sulfurous Acid H 2 SO 3(aq) Sodium Hydroxide Na. OH(aq)

Ionic Compounds Can be solid, aqueous or liquid. They are always solid at room temperature. Ex. Na. Cl(s) If Liquid, information must be provided. Ex. molten calcium chloride - Ca. Cl 2(l) Some can dissolve in water, becoming aqueous.

Solubility The property of a chemical substance called solute to dissolve in water (solvent). Solute Na. Cl Solvent the substance that dissolves the solute H 2 O

Solubility Guidelines Set of rules to predict if an ionic compound will dissolve in water. Ba. SO 4 NH 4 Cl

Solubility Determine the Solubility of the following Compounds. NH 4 Cl Ba. SO 4 Ag. Br Mg. CO 3 KNO 3 Pb. Cl 2

Moving Forward Chemical Reactions Formation and Decomposition Reactions