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Types of Reactions

Understand types of chemical reactions including synthesis, decomposition, single & double replacement, combustion, and their driving forces such as transfer of electrons, formation of solid, gas, and water. Learn through examples.

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Types of Reactions

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  1. Types of Reactions

  2. Four driving forces for chemical reactions. • Formation of a solid • Formation of water • Transfer of electrons • Formation of a gas

  3. Main Types of Reactions • Oxidation/Reduction: • Synthesis • Decomposition • Single Replacement • Combustion • Double Replacement: • Precipitation • Acid-Base

  4. Oxidation- Reduction • The transfer of electrons • To be discussed later…

  5. Synthesis • Two or more substances combine to form one product A + X  AX

  6. Synthesis Reaction

  7. Examples of Synthesis Reactions

  8. Decomposition • One reactant decomposes into two or more products. AX  A + X

  9. Decomposition Reaction

  10. Examples of Decomposition Reactions

  11. Single Replacement A + BX  AX + B Y + AX  X + AY

  12. Single Replacement Reaction

  13. Examples of Single Replacement Reactions

  14. Replacement of • A metal by a more active metal • Hydrogen in water by a metal • Hydrogen in acid by a metal • Halogens by a more active halogen

  15. Double Replacement AX + BY  AY + BX The ions of two compounds in water solution exchange ions creating a solid, liquid or a gas.

  16. Double Replacement Reactions

  17. Examples of Double replacement Reactions

  18. Combustion • A substance reacts with oxygen releasing heat and light. • A + O2 → Various products • Commonly: CXHY + O2 → CO2 + H2O • Hydrocarbon reacts with oxygen (cumbustion/decomposition)

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