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Wednesday, 5 March 2014

FOR CP2 ONLY!

Here are pointers to review for midterm test:
1. Exothermic and Endothermic reaction: 
    -  The principle of exothermic and endothermic reaction/process;
    -  describing exo endo reaction in the term of breaking bonds and forming bonds;
    -  exo-endo process in the changing state of matter
    -  The examples of exo endo
2. Chemical Equations: Balancing Chemical Equations
    -  describing chemical equations: the signs in equations
    -  balance a chemical equations

Balance the following equations.

1         1.  ___C2H3Cl   + ___O2 à ___CO2  + ___H2O   + ___HCl
2         2.      ___(NH4)2Cr2O7 à ___NH3  + ___H2O  + ___Cr2O3  + ___O2
3         3.      ___Al  + ___NaOH  + ___H2O à ___NaAl(OH)4  + ___H2
4         4.      ___NH4Cl   + ___Ca(OH)2 à ___CaCl2  + ___NH3   + ___H2O
5         5.      ___Al  + ___NH4ClO4 à ___Al2O3  + ___AlCl3  + ___NO  + ___H2O
6         6.      ___H2SO4  +  ___NaHCO3 à ___Na2SO4    + ___CO2    + ___H2O
7         7.      _____ NaOH (aq) + _____ H2SO4 (aq) → _____ H2O (l) + _____ Na2SO4 (aq)
8         8.      _____ K (s) + _____ H2O (l) → _____ KOH (aq) + _____ H2 (g)
9.      ____ H2 + ____ O2 à ____ H2O
10.  ____ Pb(OH)2 + ____ HCl à ____ H2O + ____ PbCl2
11.  ____ AlBr3 + ____ K2SO4 à ____ KBr + ____ Al2(SO4)3
12.  ____ CH4 + ____ O2 à ____ CO2 + ____ H2O
13.  ____ C8H18 + ____ O2 à ____ CO2 + ____ H2O
14.  ____ FeCl3 + ____ NaOH à ____ Fe(OH)3 + ____NaCl
15.  ____ Ag2O à ____ Ag + ____O2

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