Home > Community > What is observed when water is added to sodium peroxide and what is the use of the gaseous product?
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+ Hydrogen peroxide
+ Water
+ Sodium
+ Peroxides
+ Chemistry
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Martha Stokes

What is observed when water is added to sodium peroxide and what is the use of the gaseous product?

Dave Brunfeldt  Follow

I’m guessing that you’re asking if hydrogen peroxide will form a 50–50 solution with water. Yes. Hydrogen peroxide and water are miscible in all proportions. A 50% solution is, however, dangerous to handle.

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Andrea Saez  Follow

Place a drop of it on a substance that H2O2 normally reacts/fizzes on. Banana skin (inside) is certainly one. Concrete/bricks, iron rust are others. If no fizzing, then it is degraded. Hydrogen peroxide releases oxygen gas when it decomposes/reacts with something -- often organic matter.

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David Cousens  Follow

Sodium peroxide can be precipitated from saturated sodium hydroxide solution with hydrogen peroxide (gives the octahydrate). So, in general sodium peroxide can exist to some extent in the presence of water.

But with excess of water, it will give the back reaction to sodium hydroxide and hydrogen peroxide. Gaseous product? If carried out improperly, the heat released with the hydrolysis can lead to destruction of the hydrogen peroxide, giving water and oxygen.

And what will be the use of oxygen? Read “Ode an den Sauerstoff” of Johannes Trojahn (in orthography of 19th century), to be sung to the tune of Great Britain’s national anthem.

Heil dir, o Sauerstoff [Hail thee, o oxygen …]
Köstlicher Dauerstoff
Erdkreises Zier!
Organisirender,
Assimilirender,
Stets oxydirender,
Ehre sei dir!

Keine Verbrennung ist
Möglich, wo du nicht bist,
Liebliches O!
Respirationsorgan
Muss dich beständig han, [i.e. “haben”]
Könnte sonst nicht bestahn, [i.e. “bestehen”]
Frei, fromm, frisch, froh.

etc. etc.

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Bhavesh  Follow

The sodium reacts violently with water to produce hydrogen and sodium hydroxide. The heat of the reaction is enough to ignite the hydrogen, possibly explosively.

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Mark Evely  Follow

The hydrogen peroxide is diluted.

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Beth Hale  Follow

Sodium peroxide and water interact violently to produce, ultimately, sodium hydroxide and water. However, the Na2O2 hydrolyses first to give hydrogen peroxide which then breaks down further to water and oxygen.

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