7.2 Evidence of a Chemical Reaction

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Writing Equations for Precipitation Reactions 1. Write an equation for the precipitation reaction that occurs (if any) when solutions of sodium carbonate Na 2CO 3(aq) and copper(II) chloride CuCl 2(aq) are mixed. 2. Combine the cation from one reactant with the anion from the other.
Writing Equations for Precipitation Reactions • Make sure to write correct (charge neutral) formulas for the new ionic compounds. 3. Use the solubility rules to determine whether any of the potential new products are indeed insoluble. Potentially Insoluble Products: NaCl CuCO 3 • NaCl is soluble (compounds containing Cl − are usually soluble and Na + is not an exception). • CuCO 3 is insoluble (compounds containing CO 3 2− are usually insoluble and Cu 2+ is not an exception).
Page 1 and 2: 7.2 Evidence of a Chemical Reaction
Page 3 and 4: 7.2 Evidence of a Chemical Reaction
Page 5 and 6: 7.3 The Chemical Equation: Combusti
Page 7 and 8: 7.3 The Chemical Equation: Combusti
Page 9 and 10: 7.4 How to Write Balanced Chemical
Page 11 and 12: 7.4 How to Write Balanced Chemical
Page 13 and 14: Example: The reaction of solid alum
Page 15 and 16: 7.5 Aqueous Solutions and Solubilit
Page 17 and 18: FIGURE 7.6 Ions as conductors Stron
Page 21 and 22: Solubility: Mostly Insoluble • Fo
Page 23 and 24: 7.6 Precipitation Reactions: Reacti
Page 25 and 26: 2KI(aq) + Pb(NO 3) 2(aq) PbI 2(s)
Page 27: 2KI(aq) + Pb(NO 3) 2(aq) PbI 2(s)
Page 31 and 32: Writing Equations for Precipitation
Page 33 and 34: 7.7 Writing Chemical Equations for
Page 35 and 36: Molecular, Complete Ionic, and Net
Page 37 and 38: • Acid-base reactions 7.8 Acid-Ba
Page 39 and 40: 7.8 Gas Evolution Reactions
Page 41 and 42: 7.9 Oxidation-Reduction Reactions
Page 43 and 44: 7.9 Oxidation-Reduction Reactions
Page 45: 7.10 Classifying Chemical Reactions

7.2 Evidence of a Chemical Reaction

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