Reiñel Philippe Wylie Page 10
Types of Chemical Reaction With Balanced Equation
Rule- Remember that the first step to write the correct formulas. You can still change the subscripts at this point, but not later while balancing.
Scheme- A+B = AB
Ex. w/ Balanced Equation- 2Ca + O2 = 2CaO
2. Decomposition- decompose= fall apart one reactant breaks apart into elements or more elements or compounds.
Rule- We can predict the products if its a binary compound (which means it is made up of only two elements).
Scheme- AB = A + B
Ex. w/ Balanced Equation- 2NaCl = 2Na + Cl2
3.Single Replacement- One element replaces another element.
Rule- We can even tell whether or not single replacement reaction will happen: Because some chemicals are more " active " than other. More active replaces less active.
Scheme- AB + C = AC + B
Ex. w/ Balanced Equation- 3K + AlN = Al + K3N
4. Double Replacement- Two things replace each other.
Rule- Have certain " Driving forces ". There's three driving forces.
A. Solid ( precipitate )
C. Molecular compound
Scheme- AB + CD = AC + BD
Ex. w/ Balanced Equation- Na2S + 2HCl = 2NaCl + H2S
5.Combustion- Normally, a compound composed of only C, H, and maybe O, is reacted with oxygen usually called "burning".
- If the combustion is complete, the products will be CO2 and H2O.
Scheme- C#H# + O2 = CO2 + H2O
Ex. w/ Balanced Equation- 2 C8H18 + 25 O2 = 16 CO2 18 H2O