Download Chemical Reactions and Balancing Chemical Equations

Chemical Reactions and
Balancing Chemical Equations
Types of Chemical Reactions
Web Link: http://web.fccj.edu/~ksanchez/1032/wksheet/Reactions.htm
COMBINATION - Two or more reactants form a single product.
X+Y
Z
Examples:
6Li + N2
2Li3N
2Ca + O2
2 CaO
4Al + 3O2
2Al2O3
DECOMPOSITION – Single reactant forms two or more products.
X
Y+Z
Example:
2HgO
CaCO2
2Hg + O2
Ca + CO2
SINGLE RELACEMENT – One substance replaces another in a compound.
A + XY
AY + X
Example:
2Mg + TiCl4
2MgCl2 + Ti
Zn + H2SO
ZnSO4 + H2
(Note: Check “Activity Series” to see if some replacements will occur.)
DOUBLE REPLACEMENT – Two compounds “change partners”.
AB + XY
AY + XB
Example:
NaCl(aq) + AgNO3(aq)
NaNO3(aq) + AgCl(s)
HCL(aq) + NaOH(aq)
H2O(l) + NaCl(aq)
COMBUSTION – Generally involves a “fuel” being “burned” in oxygen and
production of CO2 and H2O.
Example:
4C5H5N + 25 O2
20 CO2 + 10 H2O + 2N2
CH4 + O2
CO2 +2 H2O
Document created by South Campus Library Learning Commons 1/06/06. Permission to copy and use is
granted for educational use provided this copyright label is displayed.
Balancing Chemical Equations
Web Link: http://www.wfu.edu/~ylwong/balanceeq/balanceq.html
Using the examples from the websites above, name and balance the
following reactions.
1)
Na + Cl2
NaCl
2)
HgO
3)
C3H6O + O2
CO2 + H2O
4)
Mg + TiCl4
MgCl2 + Ti
5)
Ca + P4
6)
CuSO4 + NaOH
Hg + O2
Ca3P2
Cu(OH)2 + Na2(SO4)
Answers:
1) Combination,
2 Na + Cl2
2 NaCl
2) Decomposition,
2 HgO
3) Combustion,
4) Single Replacement,
5) Combination,
6) Double Replacement,
C3H6O + 4 O2
3 CO2 + 3 H2O
2 Mg + TiCl4
2 MgCl2 + Ti
6 Ca + P4
2 Ca3P2
CuSO4 + 2 NaOH
Cu(OH)2 + Na2(SO4)
2 Hg + O2
Document created by South Campus Library Learning Commons 1/06/06. Permission to copy and use is
granted for educational use provided this copyright label is displayed.