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Hydrogen has a much lower attraction for electrons than oxygen does (or in more technical terms, oxygen has a much higher electronegativity). So when hydrogen gives up an electron to oxygen, it creates a strong chemical bond (although not an ionic bond; hydrogen's electronegativity is too high for that). When hydrogen peroxide gives up excess oxygen, the hydrogen remains bonded to the remaining oxygen (since hydrogen peroxide becomes water, H2O). If instead the hydrogen peroxide were to give up hydrogen, you would lose the powerful bond between hydrogen and oxygen, and all you would get in exchange would be a much weaker bond between hydrogen atoms and other hydrogen atoms, in the diatomic hydrogen molecule. Chemical reactions move in the direction of the strongest available bonds.

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Q: Why is oxygen gas produced from the decomposition of H2O2 and not hydrogen gas?
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Related questions

What evidence was there that a chemical reaction was taking place in the decomposition of hydrogen peroxide?

The decomposition of H2O2 is exothermic and oxygen is released.


What are the products of the decomposition reaction of hydrogen peroxide?

The products of the decomposition of hydrogen peroxide are water and oxygen, as shown in the following equation: 2 H2O2 → 2 H2O + O2


How does water and oxygen decompose hydrogen peroxide?

The decomposition reaction is:2 H2O2 = 2 H2O + O2


Chemical equation for the decomposition of hydrogen peroxide?

2 H2O2 ---> 2 H2O + O2 + energy, it's exothermic


Is MnO2 a catalyst?

Yes, it catalyses the decomposition of Hydrogen peroxide (H2O2) into water (H2O) and Oxygen (O2) 2H2O2 ------> 2H2O + O2


Why H2O2 is stored in coloured wax?

Hydrogen peroxide, which has the formula H2O2, is preferably stored in dark coloured bottles because visible light can catalyze the decomposition of the peroxide to water and oxygen.


What is the chemical equation on h2o2---h2o?

The decomposition of hydrogen peroxide produces water and oxygen. 2H2O2(l) -->2H2O(l) + O2(g)


Why hydrogen peroxide stored in dark bottles?

Hydrogen Peroxide (H2O2 ) is a chemical compound that decomposes into water and oxygen when exposed to light. This happens because the light energy is sufficient to bring about cleavage in the bond between hydrogen and oxygen in this compound. The dissociated elements again associate to form water ( which is a stable compound ) and oxygen. to prevent H2O2 from decomposition, it should be protected from light.


What is the elements of H2O2?

Hydrogen and Oxygen


Why does oxygen gas yield from any compound which decomposes?

This isn't true. Only a few compounds, such as hydrogen peroxide (H2O2) and potassium chlorate (KClO3) yield oxygen upon decomposition.


Hydrogen peroxide is water plus oxygen gas?

NO! Hydrogen peroxide is an entirely different compound with the formula H2O2. Unlike water, which is a stable compound, hydrogen peroxide is unstable and gradually decomposes to water and oxygen gas. This decomposition can be accelerated by the addition of a catalyst.


What elements make H2O2?

Hydrogen peroxide contain hydrogen and oxygen.