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CH1012
BALANCING REDOX EQNS.
BALANCING REDOX EQUATIONS
To balance a redox equation, we separate the oxidation and reduction processes into separate equations (called half-reactions) ELECTRONS GAINED  =  ELECTRONS LOST
eg.      2 Na     +      Cl2       ®      2 NaCl
Half-reactions 
2 x (Na             ®       Na+  +  e-    )     
   Na is oxidised - the reductant
2e- + Cl2        ®       2 Cl-  
               Cl2 is reduced - the oxidant