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Types of Reactions

Types of Reactions. Synthesis reactions Decomposition reactions Single displacement reactions Double displacement reactions Combustion reactions You need to be able to identify each type. . C. C. +. O. O. O. O. 1. Synthesis. Example C + O 2. General: A + B  AB.

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Types of Reactions

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  1. Types of Reactions • Synthesis reactions • Decomposition reactions • Single displacement reactions • Double displacement reactions • Combustion reactions You need to be able to identify each type.

  2. C C + O O O O 1. Synthesis Example C + O2 General: A + B  AB

  3. Ex. Synthesis Reaction

  4. Practice • Predict the products. Na(s) + Cl2(g)  Mg(s) + F2(g)  Al(s) + F2(g)  2 2 NaCl(s) MgF2(s) 2 3 2 AlF3(s) • Now, balance them.

  5. + Na Na Cl Cl 2. Decomposition Example: NaCl General: AB  A + B

  6. Ex. Decomposition Reaction

  7. + +  Cl Cl Cl Cl Zn Zn Cu Cu 3. Single Displacement Example: Zn + CuCl2 Zn was oxidized Went from neutral (0) to (+2) Cu was reduced Went from (+2) to Neutral (0) General: AB + C  AC + B

  8. Ex. Single Replacement Reaction

  9. Single Replacement Reactions • Write and balance the following single replacement reaction equation: • Zn(s) + HCl(aq) ZnCl2 + H2(g) 2 2 2 • NaCl(s) + F2(g)  NaF(s) + Cl2(g) • Al(s)+ Cu(NO3)2(aq) 2 3 3 Cu(s)+ Al(NO3)3(aq) 2

  10. Ca Ca  + + Mg Mg S S O O 4. Double displacement Example: MgO + CaS General: AB + CD  AD + CB

  11. Double Replacement Reactions • Think about it like “foil”ing in algebra, first and last ions go together + inside ions go together • Example: AgNO3(aq) + NaCl(s)  AgCl(s) + NaNO3(aq) • Another example: K2SO4(aq) + Ba(NO3)2(aq)  KNO3(aq) + BaSO4(s) 2

  12. Practice • Predict the products. • HCl(aq) + AgNO3(aq)  • CaCl2(aq) + Na3PO4(aq)  • Pb(NO3)2(aq) + BaCl2(aq)  • FeCl3(aq) + NaOH(aq)  • H2SO4(aq) + NaOH(aq)  • KOH(aq) + CuSO4(aq) 

  13. 5. Combustion Reactions • Combustion reactions - a hydrocarbon reacts with oxygen gas. • This is also called burning!!! • In order to burn something you need the 3 things in the “fire triangle”: • 1) Fuel (hydrocarbon)2) Oxygen 3) Something to ignite the reaction (spark)

  14. Combustion Reactions • In general: CxHy + O2  CO2 + H2O • Products are ALWAYS carbon dioxide and water. (although incomplete burning does cause some by-products like carbon monoxide) • Combustion is used to heat homes and run automobiles (octane, as in gasoline, is C8H18)

  15. Combustion • Example • C5H12 + O2 CO2 + H2O • Write the products and balance the following combustion reaction: • C10H22 + O2  6 8 5

  16. Mixed Practice • State the type & predict the products. • BaCl2 + H2SO4 • C6H12 + O2  • Zn + CuSO4  • Cs + Br2  • FeCO3 

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