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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Can we break down CO2 to solve climate change? [closed]
I'm not past basic college chemistry class myself, but it seems to me that there may be an eloquent solution to eliminate CO2 levels in the environment:
Can we not separate the carbon (through ...
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Ozone formation
I have read this source about formation of natural atmospheric ozone claiming that the ozone creation step requires an extra molecule:
$\ce{O + O2 + A -> O3 + A}$
in order to conserve momentum ...
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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 ...
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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 ...
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As per Lewis structure, can oxygen molecules in ozone be interconnected with one another through covalent single bonds?
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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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)...
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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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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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{...
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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 $\ce{-CHO}$...
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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 ...
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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 ...
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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 ...
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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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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 ...
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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 ...
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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 ?
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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 ...
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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 ...
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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 ...
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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 – ...
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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 ...
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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 ...
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Ozonolysis Reaction
Why does the starting compound not need an -OH group? I thought ozonolysis only produced carbonyls?
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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?
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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 ...
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How to remove nitrose gasses from ozone gas mixture?
I produce ozone gas with an ozone generator based on corona discharge principle.
These kind of ozone generators have the disadvantage that if $\ce{N2}$ is present, a bit of $\ce{NO}$ and $\ce{NO2}$ ...
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