Types of reactions
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Types of Reactions. Four driving forces for chemical reactions. Formation of a solid Formation of water Transfer of electrons Formation of a gas. Main Types of Reactions. Oxidation/Reduction: Synthesis Decomposition Single Replacement Combustion Double Replacement: Precipitation

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Types of reactions


Main types of reactions
Main Types of Reactions

  • Oxidation/Reduction:

    • Synthesis

    • Decomposition

    • Single Replacement

    • Combustion

  • Double Replacement:

    • Precipitation

    • Acid-Base


Oxidation reduction
Oxidation- Reduction

  • The transfer of electrons

  • To be discussed later…


Synthesis
Synthesis

  • Two or more substances combine to form one product

    A + X  AX




Decomposition
Decomposition

  • One reactant decomposes into two or more products.

    AX  A + X




Single replacement
Single Replacement

A + BX  AX + B

Y + AX  X + AY




Replacement of
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


Double replacement
Double Replacement

AX + BY  AY + BX

The ions of two compounds in water solution exchange ions creating a solid, liquid or a gas.




Combustion
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)