Shanxian Chemical
SUPPLEMENTS
Sodium Bisulfite Hydrogen Peroxide Reaction
Reaction of sodium bisulfite with hydrogen peroxide
1. Reaction principle
Sodium bisulfite ($NaHSO_3 $) is reductive, and hydrogen peroxide ($H_2O_2 $) is oxidizing. When the two meet, a redox reaction occurs. The valence of oxygen in hydrogen peroxide decreases from -1 to -2, resulting in the reduction of electrons; the valence of sulfur in sodium bisulfite increases from + 4 to + 6, and the lost electrons are oxidized. The chemical reaction equation is: $NaHSO_3 + H_2O_2 = NaHSO_4 + H_2O $.
Second, the reaction phenomenon
1. ** Solution change **: During the reaction, if the sodium bisulfite solution is initially mixed with the hydrogen peroxide solution, there may be no obvious color change in the appearance of the solution, because the sodium bisulfite solution and the hydrogen peroxide solution are usually colorless and transparent liquids, and the sodium bisulfite solution generated by the reaction is also colorless and transparent.
2. ** Heat change **: The reaction is an exothermic reaction. As the reaction proceeds, the temperature of the mixed solution will increase. If you touch the outer wall of the container containing the reaction solution with your hands, you can feel a slight heat.
III. Reaction application
1. ** Industrial wastewater treatment **: In some industrial production processes, wastewater containing reducing substances such as bisulfite will be generated. The reaction of hydrogen peroxide and sodium bisulfite can be used to oxidize the bisulfite ions in wastewater to sulfate ions, reduce the reduction of wastewater, achieve certain purification purposes, and make wastewater easier for subsequent treatment and discharge.
2. ** Oxidation steps in chemical synthesis **: In some organic synthesis reactions, if it is necessary to deprotect compounds containing bisulfite protecting groups or oxidize specific groups, the reaction of hydrogen peroxide and sodium bisulfite can be used. Sodium bisulfite reacts with hydrogen peroxide first in the reaction system, and the generated products such as sodium bisulfite do not cause excessive interference to subsequent organic reactions, while completing specific oxidation tasks.
1. Reaction principle
Sodium bisulfite ($NaHSO_3 $) is reductive, and hydrogen peroxide ($H_2O_2 $) is oxidizing. When the two meet, a redox reaction occurs. The valence of oxygen in hydrogen peroxide decreases from -1 to -2, resulting in the reduction of electrons; the valence of sulfur in sodium bisulfite increases from + 4 to + 6, and the lost electrons are oxidized. The chemical reaction equation is: $NaHSO_3 + H_2O_2 = NaHSO_4 + H_2O $.
Second, the reaction phenomenon
1. ** Solution change **: During the reaction, if the sodium bisulfite solution is initially mixed with the hydrogen peroxide solution, there may be no obvious color change in the appearance of the solution, because the sodium bisulfite solution and the hydrogen peroxide solution are usually colorless and transparent liquids, and the sodium bisulfite solution generated by the reaction is also colorless and transparent.
2. ** Heat change **: The reaction is an exothermic reaction. As the reaction proceeds, the temperature of the mixed solution will increase. If you touch the outer wall of the container containing the reaction solution with your hands, you can feel a slight heat.
III. Reaction application
1. ** Industrial wastewater treatment **: In some industrial production processes, wastewater containing reducing substances such as bisulfite will be generated. The reaction of hydrogen peroxide and sodium bisulfite can be used to oxidize the bisulfite ions in wastewater to sulfate ions, reduce the reduction of wastewater, achieve certain purification purposes, and make wastewater easier for subsequent treatment and discharge.
2. ** Oxidation steps in chemical synthesis **: In some organic synthesis reactions, if it is necessary to deprotect compounds containing bisulfite protecting groups or oxidize specific groups, the reaction of hydrogen peroxide and sodium bisulfite can be used. Sodium bisulfite reacts with hydrogen peroxide first in the reaction system, and the generated products such as sodium bisulfite do not cause excessive interference to subsequent organic reactions, while completing specific oxidation tasks.
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