REACCIONES QUÍMICAS

“REACCIONES QUÍMICAS PAG. 11” 

“NUMERO PARES”

N₂ + O2 ---------------> 2N₂O

                 4 – N – 4

                 2 – O – 2

Pb (OH)₄ --------------> PbO₂  + 2H₂O

                  1 – Pb – 1

                   4 – O - 4

                   4 – H – 4

3C + 2 Fe₂ O₃  --------------> 4 Fe + 3CO₂

                           3 – C – 3

                            4 – Fe – 4

                             6 – O – 6

 2 Al + Cr₂ O₃  ------------------> Al ₂ O₃  + 2Cr 

                           2 – Al – 2

                            2 – Cr – 2

                            6 – O – 6

Al + 3AgNO₃  -----------------> Al (NO₃)₃  + 3Ag

                           1 – Al – 1

                           3 – Ag – 3

                            3 – N – 3

                            9 – O – 9

“NÚMERO IMPARES”

4H + O₂  -----------------> 2H₂O

                    4 – H – 4

                     2 – O – 2

                  

2NH₃  + 2O₂ ---------------> 2NO + 3H₂O

                        2 – N – 2

                         6 – H – 6

                          4 – O – 4

2SO₂ + O₂ ------------------> 2SO₃

                      2 – S – 2

                       6 – O – 6  

4ZnO + 2C  ----------------> 2Zn + 2Co₂

                        4 – Zn – 4

                         4 – O – 4

                         2 – C – 2

 2C₆ H₁₂O_{6 +} O₂  ------------------> CO₂  + H₂O

                               12 – C – 12

                               24 – H – 24

                                14 – O – 14