Reactivity of hydrogen peroxide

Hydrogen peroxide is a strange substance. It is somewhat similar to water but has completely different properties. For example, you should never try to put out a fire with hydrogen peroxide. Hydrogen peroxide can react as a powerful oxidizer in high concentrations. Unlike water, H2O2 is extremely reactive and breaks down easily. In the process,… Continue reading Reactivity of hydrogen peroxide

Peroxo Compounds

The peroxo acids, also called peracids for short, and their salts are of great importance for the chemical industry. They all carry the group -O-O-H or -O-O-. The perborates and percarboxylic acids are known as bleaching agents in detergents. Sulfur also forms peroxy acids: peroxomonosulfuric acid H2SO5 (Caro’s acid) and peroxydisulfuric acid H2S2O8. They have… Continue reading Peroxo Compounds

Percarbonate Compounds

Peroxycarbonates (also known as peroxocarbonates) play an important role in the synthesis of plastics, for example in the production of PVC or PE. Many heavy-duty detergents contain percarbonates as bleaching substances. Peroxy(di)carbonates contain bound peroxides The underlying peroxycarboxylic acid H2CO4 is not stable and rather hypothetical, but there are the anions HCO4– and CO42-, which… Continue reading Percarbonate Compounds

The structure of the H2O2 molecules

When it comes to the structure of hydrogen peroxide, many think of its chemical brother H2O. But you should also keep an eye out for O2 because H2O2 lies chemically right in the middle. Here are some rough structures that come up: The structures drawn in red are more or less correct. So, as so… Continue reading The structure of the H2O2 molecules

Blood and hydrogen peroxide

Hydrogen peroxide is produced in many reactions of oxygen in the blood. Since it’s toxic, the body has developed a great antidote. This is called catalase and is contained in the blood. You can do a nice experiment with it. Safety note: Hydrogen peroxide is explosive in high concentrations and when heated. Plus it’s corrosive.… Continue reading Blood and hydrogen peroxide

Detection reactions using hydrogen peroxide

Complexes with titanyl sulfate and with chromate With colorless titanyl sulfate, a deep yellow titanium peroxo complex is formed. TiO2+ + H2O2 -> [TiO2]2+ + H2O This reaction can also be used to detect dissolved titanium ions. Cr2O72- + 4 H2O2 -> 2 [CrO5(OH)]– + 3 H2O In the same way, a deep blue colored… Continue reading Detection reactions using hydrogen peroxide

Synthesis of hydrogen peroxide

Old procedures If the oxides of alkali or alkaline earth metals are reacted with oxygen, the corresponding peroxides are obtained. The barium peroxide is particularly important. 2 BaO + O2 -> 2 BaO2 Formally, we have the barium salt of hydrogen peroxide here. If we add a stronger acid to this salt, the weak acid… Continue reading Synthesis of hydrogen peroxide