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Presentation by: Bruce Maples EDU 529 Individual PowerPoint Assignment For Dr. Li 6/30/03. FIVE BASIC WAYS TO CLASSIFY CHEMICAL REACTIONS:. Synthesis Decomposition Single-Replacement Double-Replacement Combustion. Synthesis Reactions:.

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Presentation by:

Bruce Maples

EDU 529

Individual PowerPoint Assignment

For Dr. Li

6/30/03


Five basic ways to classify chemical reactions
FIVE BASIC WAYS TO CLASSIFY CHEMICAL REACTIONS:

  • Synthesis

  • Decomposition

  • Single-Replacement

  • Double-Replacement

  • Combustion


Synthesis reactions
Synthesis Reactions:

  • A synthesis reaction generally follows this equation:

  • X + Y-->XY

  • In this equation, X and Y can be compounds or elements. The result XY is a compound.


Examples of synthesis reactions
Examples of Synthesis Reactions:

  • 2Ba + O2 -->2BaO

  • 4Cu+ + O2 -->2Cu2O

  • 2Cu++ + O2 -->2CuO

  • 2H2 + O2 -->2H2O

  • C + O2 -->CO2

  • 2Na + Cl2 -->2NaCl2


Decomposition reactions
Decomposition Reactions:

  • In a decomposition reaction, an element or compound is broken down into two simpler substances. The general formula of a decomposition reaction is:

  • XY --> X + Y

  • Decomposition reactions are the opposite of synthesis reactions.


Examples of decomposition reactions
Examples of Decomposition Reactions:

  • 2HgO --> 2Hg + O2

  • 2H2O --> 2H2 + O2

  • CaCO3 --> CaO + CO2

  • Cu(OH)2 --> CuO + H2O

  • 2KClO3 --> 2KCl + 3O2H2SO4 --> SO3 + H2O


Single replacement reactions
Single Replacement Reactions:

  • In this type of reaction, one element replaces a similar element in a compound. There are two general equations for single-replacement reactions. They are:

  • A + XY --> AY + X

  • A + XY --> XA + Y

  • In this equation, A, X, and Y are the elements and XY, AY, and XA are the compounds.


Examples of single replacement reactions
Examples of Single Replacement Reactions:

  • 2Al + 3Fe(NO3)2 --> 3Fe + 2Al(NO3)3

  • 2Na + 2H2O --> 2NaOH + H2

  • 3Fe + 4H2O --> Fe3O4 + 4H2

  • Mg + 2HCl --> MgCl2 + H2

  • Cl2 + 2KBr --> 2KCl + Br2


Double replacement reactions
Double-Replacement Reactions:

  • In a double-replacement reaction, the two compounds exchange places in a solution to form two new compounds. The general equation of a double-replacement reaction is:

  • AB + XY --> AY + BX


Examples of double replacement reactions
Examples of Double-Replacement Reactions:

  • Pb(NO3)2 + 2KI --> PbI2 + 2KNO3

  • FeS + 2HCl --> H2S + FeCl2

  • HCl + NaOH --> NaCl + H2O


Combustion reactions
Combustion Reactions:

  • When a substance combines with oxygen releasing a large amount of energy in the form of light and heat, it is a combustion reaction.


Examples of combustion reactions
Examples of Combustion Reactions:

  • An example of a combustion reaction is:

  • C3H8 + 5O2 --> 3CO2 + 4H2O


Presented by

Bruce Maples

EDU 529

Individual PowerPoint Presentatio

For Dr. Sha Li

6/30/03


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