Oxidation Velocity of Sodium Sulfite with a Catalyst of Copper Sulfate
1978 Volume 4 Issue 3 Pages 294-299
Details
1978 Volume 4 Issue 3 Pages 294-299
The oxidation velocity of sodium sulfite in aqueous solution by gaseous oxygen with a catalyst of copper sulfate was measured in a homogeneous system by using the continuous rapid mixing method.
The concentration ranges of sodium sulfite and copper sulfate were from 0.01 to 0.66 mol/l and 10-6 to 10-3 mol/l, respectively. The range of initial concentration of oxygen was from 0.00045 to 0.0017 mol/l. The temperature of measurement was 15, 25 or 35°C.
The following was found from the experimental results : The reaction mechanism changes with the concentration of sodium sulfite. The apparent reaction velocity is of the zeroth order with respect to oxygen concentration, but changes with oxygen concentration in the initial period of reaction. And an induction period of the reaction exists in a low concentration range of sodium sulfite.
Further, an equation for the apparent reaction velocity was obtained.
