Monday 6 February 2012

Types of Reaction

There's a lot of types of reactions such as:
  1. Synthesis
  2. Decomposition
  3. Single Replacement
  4. Double Replacement
  5. Combustion
  6. Neutralization
  • SYNTHESIS:
In the Synthesis Reaction, 2 or more chemical will combine with each other to form another new chemical with the form:
          A+B --> AB
Ex: 2 Na + 1 Cl2 -->2 NaCl ( don't forget your balance man )

  • DECOMPOSITION:
In the Decompostion Reaction, one reactant will be broken down to 2 or more product in the fo22rm :
          AB --> A + B
Ex: CaCO3 --> CaO + CO2

  • SINGLE REPLACEMENT:
In the Single Replacement Reaction, the element replace an ion in an ionic compound. Metal replaces positive ion ( Cations ) and non-metal replaces  negative ion ( Anion ) in the form :
         A + BC --> AC + B or
         A + BC --> BA + C
Ex: 2 Na + BaCl2 --> 2 NaCl + Ba
  • DOUBLE REPLACEMENT: 
In the Double Replacement Reaction, 2 ionic reactant compound exchange ions to form 2 new ionic products in the form:
         AB + CD --> AD + CB
WARNING!!: Unless there's a solid formed, the reaction is not occur. And you must write a Net Ionic Equation if it occurs including the states.
Ex: 2 Na3PO4 + 3 Ca(NO3)2 --> 6 NaNO3 + Ca3(PO4)2
Net Ionic Equation: 3Ca (s) + 2 (PO4) (aq)  --> Ca3(PO4)2 (s)

  • COMBUSTION: 
Combustion Reaction is where burning involved in the form:
          AB + O2 --> AO + BO
Ex: C3H8 + 5O2 = 3CO2 + 4H2O
  •  NEUTRALIZATION:
Neutralization is basically same as double replacement but it's a reaction between an Acid and a Base in the form :
          Acid + Base --> Salt + H2O
Ex: HCl + NaOH --> NaCl + H2O


Activity series chart
Solubilites Chart

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