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When hydrogen peroxide is exposed to light, it can undergo a process called photodecomposition. This process involves the breaking down of hydrogen peroxide into water and oxygen molecules when it absorbs photons from the light. The reaction is accelerated in the presence of certain catalysts or transition metals, which can further break down the hydrogen peroxide into water and oxygen. This decomposition reaction is why hydrogen peroxide is typically stored in opaque containers to prevent exposure to light.

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6mo ago

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What does hydrogen peroxide decompose into when exposed to light or heat?

When hydrogen peroxide is exposed to light or heat, it decomposes into water and oxygen gas.


What does Hydrogen peroxide decompose into?

Hydrogen peroxide decomposes into water and oxygen.


Does hydrogen peroxide lose its ability to clean wounds if exposed to light?

Yes it does. I quote from a medical site: "Hydrogen peroxide can kill bacteria on contact and has been widely used for that purpose. However, straight hydrogen peroxide is unstable and rapidly loses its effectiveness when exposed to air or light." Hope this helps. (:


Why does hydrogen peroxide usually come in dark colored bottles?

Mostly because it is sensitive to temperature changes and light, and will decompose back to water & oxygen if it is exposed too too high of temperatures or too much light. Hydrogen peroxide is H2O2, and will readily switch back to H2O and O2, both much more stable molecules.


Does hydrogen peroxide decompose spontaneously?

Yes, hydrogen peroxide can decompose spontaneously over time, especially when exposed to light or heat. This decomposition process releases oxygen gas and water as byproducts.


Why hydrogen peroxide stored in dark bottles?

Hydrogen peroxide is stored in dark bottles to protect it from light exposure. Light can cause hydrogen peroxide to break down into water and oxygen, reducing its effectiveness. Storing it in dark bottles helps maintain its potency and shelf life.


Why H2O2 is stored in coloured wax?

Hydrogen peroxide (H2O2) is light-sensitive and can decompose when exposed to light. Storing it in colored wax helps to block out light and prevent this decomposition. The colored wax acts as a barrier to light, preserving the integrity and effectiveness of the hydrogen peroxide solution.


Why is hydrogen peroxide in a brown bottle?

Hydrogen peroxide is stored in brown bottles to protect it from light exposure. Light can break down hydrogen peroxide into water and oxygen, reducing its effectiveness. The brown bottle helps to preserve the stability and potency of the hydrogen peroxide.


What is hydrogen peroxide broken down into?

Hydrogen peroxide can break down into water (H2O) and oxygen (O2) when exposed to light or heat. This decomposition reaction occurs naturally over time, especially in the presence of certain catalysts like metals.


What do you mean by 100 volume of hydrogen peroxide?

It means that the concentration of the peroxide is such that for every 1mL of hydrogen peroxide solution, 100mL of oxygen will be produced if fully reduced, catalyzed, exposed to light, heated or decomposed in any manner to the fullest extent. The fullest extent means the end point where every molecule of hydrogen peroxide releases one oxygen atom, and is converted into water.


Can hydrogen peroxide be stored in a red bottle?

It is not recommended to store hydrogen peroxide in a red bottle as exposure to sunlight can break down the hydrogen peroxide more quickly, reducing its effectiveness. It is best to store hydrogen peroxide in its original brown bottle or in a container that blocks out light.


If hydrogen peroxide is left outside?

It degrades into water and oxygen gas. That is why hydrogen peroxide bottles are brown, to keep light from breaking it down.