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

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Types of reactions

Types of Reactions


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

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


Synthesis reaction

Synthesis Reaction


Examples of synthesis reactions

Examples of Synthesis Reactions


Decomposition

Decomposition

  • One reactant decomposes into two or more products.

    AX  A + X


Decomposition reaction

Decomposition Reaction


Examples of decomposition reactions

Examples of Decomposition Reactions


Single replacement

Single Replacement

A + BX  AX + B

Y + AX  X + AY


Single replacement reaction

Single Replacement Reaction


Examples of single replacement reactions

Examples of Single Replacement Reactions


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.


Double replacement reactions

Double Replacement Reactions


Examples of double replacement reactions

Examples of Double replacement Reactions


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)


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