One method is to pass gaseousFreon-12 through a bed of powdered sodium oxalate at 270C. Existing stockpiles of the refrigerant Freon-12 (molecular formula CF2Cl2) have to be destroyed because it leads to the depletion of the ozone layer when released into the atmosphere.
The following reaction occurs:
CF2Cl2 + Na2C2O4--->NaF + NaCl + C +CO2
1. Balance the equation.
2. Calculate the mass of sodium oxalate (Na2C2O4) required to destroy the 147000 kg of Freon-12.