Shanxian Chemical
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Copper Hydrogen Peroxide Reaction
Reaction of copper with hydrogen peroxide
Copper is placed in a hydrogen peroxide solution, and at first, there is no significant appearance. However, after a while, the solution gradually turns light blue, and fine bubbles escape.
Because copper is not an active metal, it can catalyze the decomposition of hydrogen peroxide. Hydrogen peroxide itself decomposes into water and oxygen, and the reaction formula is: $2H_ {2} O_ {2}\ stackrel {Cu }{=\!=\!=} 2H_ {2} O + O_ {2}\ uparrow $.
At the same time, copper will also oxidize with hydrogen peroxide to form copper ions. Copper ions appear blue in the solution, which causes the solution to change color. The chemical reaction formula is roughly: $Cu + H_ {2} O_ {2} + 2H ^ {+} = Cu ^ {2 + } + 2H_ {2} O $, in which the hydrogen ion may be derived from the weak hydrolysis in the solution or the addition of acid.
As the reaction continues, the bubble escapes more and more violently, and the blue color of the solution gradually deepens, which is a sign of the continuous reaction. When the hydrogen peroxide is exhausted, the reaction stops, and finally stays in the solution, it is a solution containing copper ions, or there is unreacted copper.
Copper is placed in a hydrogen peroxide solution, and at first, there is no significant appearance. However, after a while, the solution gradually turns light blue, and fine bubbles escape.
Because copper is not an active metal, it can catalyze the decomposition of hydrogen peroxide. Hydrogen peroxide itself decomposes into water and oxygen, and the reaction formula is: $2H_ {2} O_ {2}\ stackrel {Cu }{=\!=\!=} 2H_ {2} O + O_ {2}\ uparrow $.
At the same time, copper will also oxidize with hydrogen peroxide to form copper ions. Copper ions appear blue in the solution, which causes the solution to change color. The chemical reaction formula is roughly: $Cu + H_ {2} O_ {2} + 2H ^ {+} = Cu ^ {2 + } + 2H_ {2} O $, in which the hydrogen ion may be derived from the weak hydrolysis in the solution or the addition of acid.
As the reaction continues, the bubble escapes more and more violently, and the blue color of the solution gradually deepens, which is a sign of the continuous reaction. When the hydrogen peroxide is exhausted, the reaction stops, and finally stays in the solution, it is a solution containing copper ions, or there is unreacted copper.
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