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Replacement Reactions

Replacement Reactions. By Mrs. L. Fox Ardrey Kell High School Spring, 2013. Single Replacement Reactions. Occur when a more active element replaces a less active element in a compound Examples: Na + + Al 3 Cl  NaCl + 3Al 3+ Mg 2+ + FeO  MgO + Fe 2+

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Replacement Reactions

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  1. Replacement Reactions By Mrs. L. Fox Ardrey Kell High School Spring, 2013

  2. Single Replacement Reactions • Occur when a more active element replaces a less active element in a compound • Examples: • Na+ + Al3Cl NaCl + 3Al3+ • Mg2+ + FeOMgO + Fe2+ • Use the Activity Series chart to determine whether an element will replace another

  3. 3)b) Type of SR Reaction • Active metal is placed in water – according to the Rules, what will the product be? Li+ + H2O 

  4. 3)c) Type of SR Reaction • Active metal is placed in an acid – what will be product be? • Na+ + HCl

  5. 3)d) Type of SR Reaction • 1 halide (a halogen ion) replaces a less active halide • CaI2 + F2 CaF2 + I2

  6. Practice Predicting SR Products

  7. Double Replacement Reactions • Occur when 2 compounds switch elements • Formation of a precipitate • Acid-base neutralization • Products are H2O and a salt (an ionic compound, not just NaCl)

  8. Formation of a Precipitate • A precipitate • a solid that is formed when 2 liquids mix • Occurs because 1 of the new products is insoluble • Can be predicted by use of the Solubility Table

  9. Use the Solubility Table for the following: • (NH4)2CO3 • AgNo3 • Al(OH)3 • CuSO4 • ZnCO3 • ZnCl2 • Ba(OH)2

  10. Acid-Base Neutralization Reactions • Acids will have H+ bonded to a negative ion • Examples: HCl, H2SO4 HNO3 • Many bases will have an OH- ion attached to a metal • Examples: NaOH, KOH, Ca(OH)2

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