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Questions tagged [ozone]

Ozone is an allotrope of oxygen with the general formula O3. It is hence also known as trioxygen. This tag should be applied to questions, that are specifically about its structure, properties, and uses in chemistry.

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What are the byproducts of ozonolysis?

I understand that ozonolysis of alkenes leads to formation of aldehydes or ketones or carboxylic acids depending on the type of work up, reductive or oxidative. But when I tried searching online I ...
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Is it not possible to balance the equation $\ce{I2 +O3 -> I4O9 +O2}$ in many ways? [closed]

The above reaction can be balanced in many ways. For example, the coefficient of $\ce{I2}$ is two when coefficient of $\ce{I4O9}$ is one. But the coefficient of $\ce{O3}$ and $\ce{O2}$ can be 5 and 3 ...
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Ozone formation

I have read about the formation of natural atmospheric ozone on Wikipedia, where it is claiming that the ozone creation step requires an extra molecule in order to conserve momentum and energy: $$\ce{...
user21820's user avatar
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Question about ozonolysis of alkene/alkyne [closed]

I'm having trouble with this problem. I do not see how any of the options could produce the given products on ozonolysis. We're performing reductive ozonolysis, so products should be either ...
Man's user avatar
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unexpected ozonolysis products: short chain alkanes (methan, ethane, propane) as reaction products when ozone reacts with organic matter

My question is which molecule or functional group reacts with ozone to yield short-chain alkanes? Some background: I use ozone produced by an ozone generator with the aim to clean my vacuum instrument ...
Jochen Schmitt 's user avatar
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1 answer
162 views

As per Lewis structure, can oxygen molecules in ozone be interconnected with one another through covalent single bonds? [duplicate]

Ozone has three oxygen molecules. Since all three are the same atom, there is no difference in electronegativity. As per theory, formation of a polar covalent bond is not possible but there are two ...
Manikandan Chandrasekaran's user avatar
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Burning Plastic: can it be done without harmful pollution? [closed]

Can plastic be melted, incinerated or recycled without emitting harmful gases and CO2? Specifically, can this be done without releasing gases harmful to humans? This question pertains to the melting ...
Nick's user avatar
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Why does the ozone layer deplete faster in winter months over the poles?

Why is the depletion of the ozone layer greater in the winter months over polar regions? Is it because there is more release of $\ce{NO_x}$ due to the increased use of fossil fuels in heating which ...
Yitian Chen's user avatar
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If I don’t touch my plasma/lightning globe will it still produce ozone gas [duplicate]

I noticed when I touched my plasma/lightning globe that my fingertips smelled like what reminded me of ozone gas. I read somewhere that ozone gas could be harmful to the respiratory system So I came ...
Bob Wills's user avatar
1 vote
2 answers
113 views

Does ozone decay in pure water?

I am trying to understand ozone decay in water and its rate. Some say ozone has a first-order decay at high pH and second-order kinetics at low pH. Does ozone decay in pure water? Or does it decay ...
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What are the "ozonated magnesium oxides" used in this product?

I recently was recommended a product for gut health/constipation that actually works quite well - the product names of the main distributors are OxyPowder and Homozon. Despite the product working ...
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Ozone sensor with range above 5ppm?

I am attempting to find or build a sensor for controlling an ozone generator. To do this, the sensor will need to see the range of at least 0 to 5% (50000ppm). The commercially available sensors I ...
ericnutsch's user avatar
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Why does the stratosphere have a lot of ozone, but not the Earth's surface?

Ozone ($\ce{O3}$) and dioxygen ($\ce{O2}$) are both allotropes of oxygen. However, nearly 90% of all ozone is found in the stratosphere, whereas near the earth's surface (or overall in the troposphere)...
Dipan Mehta's user avatar
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1 answer
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Ozone depletion with the OH radical

$\ce{OH*}$ radicals are known to deplete the ozone layer. Fill out the gaps below to complete the propagation stage: \begin{align} \ce{? + O3 &-> ? + O2}\\ \ce{? + O3 &-> ? + O2} \...
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Why can't we add ozone to the ozone layer? [closed]

So that it becomes the ozone layer?
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Environmental properties of chemicals

I am trying to collect the environmental properties (GWP and ODP) of several chemicals. However, I am experiencing some problems with retrieving these properties for some fluids. For example, I cannot ...
elias's user avatar
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The effect of nonbonding electron pairs on ozone polarity

I know that ozone is a polar molecule. And our master has used the existence of nonbonding electron pairs on the central atom to justify this subject. I want to know how much the nonbonding electron ...
ramin's user avatar
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Does ozone have polar bonds?

Does $\ce{O3}$ have polar or non-polar bonds? My teacher says that $\ce{O3}$ has non-polar bonds. But chem-libre texts and many other sources state that a non-polar bond has equal distribution of ...
james smith's user avatar
7 votes
2 answers
455 views

Can ozone oxidise iodine to periodic acid?

I noticed that the reaction of ozone with $\ce{I_2}$ gives iodic acid and not periodic acid. Upon searching, I found this question: Why does iodine get oxidized to iodic acid and not periodic acid by ...
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Does sodium hydroxide react with ozone to produce sodium ozonide?

I read two reactions which I want to specify first: \begin{align} \ce{Na2O2 + O3 + H2O &-> 2NaOH + 2O2}\\ \ce{2KOH + 5O3 &-> 2KO3 + 5O2 + H2O} \end{align} Does $\ce{NaOH}$ also undergo ...
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Why is the molozonide adduct thermally unstable?

In the mechanism of alkene-ozonolysis, the intermediate molozonide adduct, which is a cyclical but symmetric molecule (shouldn't symmetry about the C-C single bond bring stability?), decomposes ...
Awe Kumar Jha's user avatar
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1 answer
251 views

Use an Ozone generator to get rid of fungus in the flat? [closed]

I was told that I can use an Ozone generator to get rid of fungus (resulting from not enough fresh air I suppose). But I didn't find any reputable source for that claim. Would it work, Chemists of ...
scrrr's user avatar
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Counting electrons in Ozonolysis [closed]

I can't understand the electron count made on this page about Ozonolysis. (http://ursula.chem.yale.edu/~chem220/chem220js/STUDYAIDS/ozonolysis/Oz.html) This is the specific part of the article: From ...
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Mechanism for oxidative workup of ozonide

Oxidative workup of ozonide produces ketone (in case both the substituents of carbon are alkyl groups) or carboxylic acid (in case one of the substituents is hydrogen), depending on the alkene. I have ...
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Ozonolysis of alkene

(from Wikipedia) I am having trouble in the last step where the alkene ozonide is reduced to ketones / aldehydes specifically in the presence of water. My teacher is telling me that water will be ...
gauri agrawal's user avatar
2 votes
2 answers
1k views

How to switch Mercury-vapor lamp between UVA and UVC bands? [closed]

I have Mercury-vapor lamp emitting UV light. I am looking for the nice solution to cut off spectral lines for UVA or UVC, to make it one day to generate ozone and another day to use it for ...
a a's user avatar
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What is the efficiency of UV lamp in ozone generation (Ozone g vs. energy consumed )

re.: What is the efficiency of UV lamp in ozone generation (Ozone g vs. energy consumed ) I read a lot of papers from the Internet on using UV lamp for generating ozone but none discussed the ...
a a's user avatar
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2 answers
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What will happen if I trap an ozone producing device inside a small airtight area? [closed]

I'm currently building a UVC light, and right now I'm working on figuring out how to place it in an aluminum reflector housing to cast the beam of light effectively. It's creating a lot of ozone, and ...
Jared Cravens's user avatar
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51 views

Ozone layer: why shouldn’t there be holes at the poles? [closed]

Just read "What property allows ozone to absorb uv light" together with excellent answers. The driver here, i.e. the source of both the short and long wave UV, is of course sunlight. This is notably ...
Mick Stupp's user avatar
1 vote
1 answer
263 views

what causes the smell of a room ionizer? If ozone, what are we actually smelling when ozone interacts with nasal mucous? [closed]

This touches on how smell works, but my intent is ask about the mechanism for why do ionised smell like they do? I would like to get one step past ozone if that is the primary mechanism.
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Question on identification of a compound

Question: Multiple correct answers are possible My Approach: I just found structure Q for all options A, B, C and D for which I have uploaded the structures below with their corresponding options. ...
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Electrons distribution of oxygen atoms in ozone [closed]

While dealing with the Lewis structure for ozone, most of the explanations show the electron distribution around the 3 oxygen atoms with a single and double bond. But if you count the number of ...
sanmahaan's user avatar
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2 answers
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Rate law for breakdown of ozone to oxygen

For the following problem: Example 3: Write the rate law for $\ce{2 O3 -> 3 O2}$ given that the f‌irst step is fast and reversible, and the second step is slow. $$ \begin{align} &\text{...
Natasha A.'s user avatar
3 votes
2 answers
702 views

Number of optically active compounds among the products of ozonolysis

The number of optically active compound(s) obtained upon complete ozonolysis of the following optically active compound is In the question, I broke all the double bonds and added a $\ce{-CHO}$...
Asad Ahmad's user avatar
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Pressure dependent rate coefficient

I am trying to study how the pressure will affect the formation of ozone at around 5 bar. So, I am looking for a simple relation between the reaction rate coefficient and the pressure to use it in my ...
Mohammed_Sabbah's user avatar
3 votes
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Ozone cross-section in the near-infrared

I am searching for ozone absorption cross-section in the wavelengths range 1.1 μm to 10 μm. So far I looked in the following databases: HITRAN Max-Planck Institute for Chemistry Mainz and of ...
Mohammed_Sabbah's user avatar
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Ozonolysis of 1,2,3,4,5,8‐hexahydronaphthalene

Consider 1,2,3,4,5,8‐hexahydronaphthalene: If one equivalent of ozone is added, then which double bond will undergo ozonolysis? If it attacks the more electron rich one, then unstable 10 membered ...
user226375's user avatar
2 votes
1 answer
96 views

Removing ozone from a gas flow

I have a potential problem in that I need to reliably remove ozone from a stream of ionized gases, mostly air. The flow rate is quite low, less than 400 sccm. I was thinking of something catalytic, ...
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3 votes
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Reduction using hydrazine and glycol in alkaline medium

Question: This question was asked in my exam and I have done it properly until the third step. Unfortunately, although the last step looked like Wolff-Kishner reduction to me, I could not do it. My ...
Sarah jane's user avatar
1 vote
2 answers
152 views

EPDM tube resistant to ozone on the long run?

I am working with ozone produced with an ozone generator and pure oxygen. The resulting O2 / O3 gas mixture is probably about 80-85% O2 and up to 15-20% O3. The generator does produce about 500g of ...
Andreas's user avatar
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Ozonolysis mechanism question

Is this mechanism will be similar to ozonolysis ? My try : My Question is will B be the answer ? And what does Me2S do ?
Chloritone_360's user avatar
1 vote
1 answer
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Will UVC light/ozone affects color on fabrics?

I'm planning to put a low power UVC light bulb into my wardrobe to kill bacteria and prevent bad smell on clothes but I'm wondering will it affect color on the clothes? I've done some research but ...
minhng99's user avatar
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2 answers
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How does the 1.5 bond order of ozone contribute to its instability?

I'm confused as to why ozone is so unstable? I've been told it's because it has a fractional bond order. However, this doesn't make sense to me. Don't fractional bond orders mean resonance and doesn't ...
vish's user avatar
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1 answer
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Reacting NaOH in solution with O3

I use common air to produce ozone. However the gas after the ozone generator does contain $\ce{NO2}$ gas, which I have to remove for the subsequent steps. I tried to remove the $\ce{NO2}$ with a ...
Andreas's user avatar
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2 votes
2 answers
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How to measure ozone output of an ozone generator using chemical methods

I have the need to optimize an corona discharge based ozone generator. There are certain variables like frequency and voltage which I can change. The easiest way would be to use an ozone analyzer – ...
Andreas's user avatar
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1 vote
1 answer
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Role of solvents in ozonolysis and oz0nolysis of alkynes with water [closed]

My text book says that when an ozonide (formed from an alkene) is treated with $\ce{Zn/CH3COOH}$, it cleaves to give carbonyl Compounds. 1) Does $\ce{ Zn/CH3COOH}$ mean Zinc in acetic acid (or) zinc ...
Gokulakrishnan Shankar's user avatar
1 vote
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149 views

Best drying agent for ozone?

For cleaning purposes I do bubble ozone trough $\ce{H2O}$. However the ozone gas is moist then, but I need it as dry as possible. I intended to use silica gel as drying agent. However the orange ...
Andreas's user avatar
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Ozonolysis Reaction

Why does the starting compound not need an -OH group? I thought ozonolysis only produced carbonyls?
Sarah Smith's user avatar
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What is the Lewis structure of Ozonide ion? [closed]

What will be the Lewis structure of the ozonide ion, including formal charges? Do all oxygen atoms have filled octate?
Archisman Panigrahi's user avatar
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501 views

How long does it take to saturate H2O with O3 [closed]

Let’s assume I have one liter of distilled $\ce{H2O}$ in an stainless steel container – from the bottom side of the container I do bubble ozone trough the $\ce{H2O}$. Of cause it is not pure O3, so ...
Andreas's user avatar
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