Questions tagged [carbon-dioxide]

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Converting CO2 into a form with less volume? [closed]

Say I have a kilogram of CO2 stored in a pressurized tank and want to keep it from escaping into Earth's atmosphere. Plants can already sequester CO2 in the form of glucose, $\ce{C6H12O6}$, through ...
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Why doesn't sodium bicarbonate dissolved in water spontaneously effervesce when carbonic acid does?

It's well known that if you put carbonic acid $\ce{H2CO3}$ into water it will dehydrate into carbon dioxide $\ce{CO2}$ and water $\ce{H2O}$. Indeed this is how modern fizzy drinks generate their fizz. ...
Hadi Khan's user avatar
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2 answers
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Is it possible to filter CO2? [closed]

I'm diving into the world of chemistry here, pondering a concept that might sound a bit out there. Can we actually filter out CO2 from a car's exhaust pipe and store it until it's safe to handle? This ...
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Pressure degasser of water

Currently, I am working on a project where we are using pressure degassing. The idea is to make a test setup where we lower the pressure in a flask to 'degas' the solution. The solution is just ...
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Production of town gas

Town gas contains quite a lot of chemicals. Based on my research, the order of abundance of its constitutes is hydrogen, carbon monoxide, nitrogen, carbon dioxide, gaseous naphtha and oxygen, if ...
Freeby Freeby's user avatar
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Effect of carbon dioxide impurities on the Haber–Bosch process

The Haber–Bosch process is a highly exothermic reaction that is used to produce ammonia from nitrogen and hydrogen. The nitrogen is typically obtained from the air using a membrane separation process, ...
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How to achieve highest CO2 pressure from acetic acid + sodium bicarbonate reaction?

I'm planning to make a high-end vinegar + baking soda rocket and started doing some researches for the best ratio of the reagents's concentrations to achieve maximum pressure. Furthermore, I know that ...
Victor's user avatar
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What happens if you carbonate ethanol?

The electronics youtuber bigclivedotcom has an on-and-off-again series where he carbonates various types of alcohol and comments on the taste. One thing he's noticed is that the stronger the alcohol, ...
David Given's user avatar
3 votes
2 answers
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Can molecular hydrogen form hydrogen bonds?

Basically, I want to know if molecular hydrogen (H$_2$) can form hydrogen bonds with other molecules (CH$_4$, CO$_2$, N$_2$). I'm trying to model the mixture of these molecules with SAFT equations of ...
felipe's user avatar
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Will charcoal (carbon) oxidize in the air?

Wikipedia — Carbon sequestration claims that burying charcoal into the soil offsets $\ce{CO2}$ and thus reduces the greenhouse effect: In the soil, the biochar carbon is unavailable for oxidation to $...
user1876484's user avatar
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Water vapor in CO2 - a chemical reaction?

I am doing some work on measuring water content of a stream of CO2 at ambient temperatures (25°C). My question is this: Am I dealing with purely a mixture of gases, or is there some chemical reactions ...
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How do I measure the percentage of CO2 in the air? [closed]

What tools can, in a very simple home environment, be used to easily measure CO2 levels in the air, for use in a home school science experiment?
Henry Stone's user avatar
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Information about liquefied carbon factories from carbon dioxide

I am looking for some information about the factories that turn CO2 gas into the liquid CO2. I want to know the methods that they are using. Can anyone help me? Thanks
Alireza's user avatar
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Measurement of actual carbon dioxide mass emitted from a diesel engine

I was wondering if there is a method to measure the actual total mass of carbon dioxide $(\ce{CO2})$ emitted from a diesel engine used for power generation. Infrared $\ce{CO2}$ sensors generally ...
AEW's user avatar
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What makes carbon dioxide gas "sticky" in pipes?

There's some perceived wisdom where I work that when flowing $\ce{CO2}$ gas in pipes it acts somewhat "sticky", in the sense that it lingers around longer and takes more $\ce{N2}$ or air to ...
Alexander Johnson's user avatar
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Could supercritical CO2 or N2 support biogenesis?

At the surface of Venus, at a pressure of 93 bar and a temperature of 737 K, both carbon dioxide and nitrogen are supercritical fluids. Now, supercritical $\ce{CO2}$ is used as a solvent in processes ...
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How does the relationship between carbonate, pH, and dissolved carbon dioxide work in water?

Fish keepers use a table like the one below to determine dissolved $\ce{CO2}$ by observing the color of a pH indicator in water with a known concentration carbonate solution (typically 4 degrees KH ~= ...
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How to use anodic and cathodic overpotentials to calculate electrolytic energy efficiency?

I am trying to calculate the energy efficiency for $\ce{CO2}$ reduction to formate, coupled to water oxidation based on literature data. $$\ce{CO2 + 2e- + 2H+ -> HCOOH}$$ $$\ce{H2O -> 2H+ + 1/...
dlight's user avatar
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Why is the bond energy for a C=O bond higher in CO2?

I was looking at the table of bond energies, and what caught my eye was how the bond energy for a $\ce{C=O}$ bond is $\pu{736 kJ/mol}$ with the exception of the $\ce{C=O}$ bonds in $\ce{CO2}$ being $\...
Derek Go's user avatar
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Flux a specific concentration of a tracer constituent of a gas

I need to flux 250 ppm of CO2 at 1000 ml/min. I have a gas system with a tank containing CO2 (CO2 at 5000 ppmvol, Oxygen 21%vol and Nitrogen the rest), connected with a mass flow controller (MFC1, ...
Mrs.Peacock's user avatar
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Carbon Sequestration For Indoor Farming

First the backstory: We've begun growing mushrooms (currently Enoki, Lion's Mane and Blue Oysters if anyone is curious) for the sake of eating and maybe potentially selling someday soon. My partner ...
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Carbonated Beverage Phenomenon [duplicate]

I've seen this phenomenon a couple of times--I actually saw it happen this night. When a carbonated beverage is poured into a cup or glass, many tiny bubbles of carbon dioxide form on the bottom of ...
Sovereign Inquiry's user avatar
3 votes
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How much 'stronger' is water vapor than carbon dioxide, molecule-per-molecule, over the course of a day, in terms of global warming potential?

I have read, many times, that water molecules are far more effective than CO2 molecules at trapping heat... But, the 'relative G.W.P.' value of water vapor (or its 'radiative forcing') is not listed ...
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Can a charcoal generating process be a low carbon footprint incinerator?

Noting that cellulose, hydrocarbons and carbohydrates are mostly C, H and O, it occurred to me that one might take low grade recyclables no longer welcome, and trash in general, and convert them to ...
David Pickett's user avatar
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1 answer
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Detecting carbon dioxide concentration using mosquito neurons

At the Mauna Loa Observatory the concentration of atmospheric carbon dioxide is measured using the absorption of infra-red light. This is a statistical technique that requires constant careful ...
James Newton's user avatar
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1 answer
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Basic Chemistry: Carbon Dioxide Formation Unsure about Reaction [closed]

I have the following question description: Consider a gas composed of $\ce{CO_2}$, $\ce{CO}$, $\ce{O_2}$ and $\ce{O}$ with 1 $\ce{C}$ nuclei for every 2 $\ce{O}$ nuclei. I am trying to write ...
Articat's user avatar
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0 answers
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Is there a cheap and effective way to make PdZn-Ag foam?

I am trying to design a machine that can convert carbon dioxide into methanol and/or hydrocarbons. My design requires PdZn-Ag foam (nanoparticles), which is made by depositing palladium-zinc vapor ...
WarpPrime's user avatar
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1 answer
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Is there any chemical that can catalyze "reverse combustion?" [closed]

I am trying to build a machine that converts carbon dioxide and water into gasoline (i.e. octane). Because the energy needs are so large, is there any catalyst chemical that can cause "reverse ...
WarpPrime's user avatar
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What apparatus is needed to get a balloon full of anhydrous carbon dioxide from solid carbon dioxide? [closed]

I'm currently planning a research project (new to this) and we need to bubble CO2 through our reaction mixture, however we are not able to use compressed gas so have been advised to pass CO2 from dry ...
chem10101's user avatar
1 vote
1 answer
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Why CO2 is not reducing the pH of NaOH as the way it is expected

I am using $\ce{CO2}$ for the reduction of pH of $\ce{NaOH}$ solution ($\pu{2.5g}\; \ce{NaOH} + \pu{250ml}\; \ce{H2O}$, with $\mathrm{pH}\; 13+$). I am introducing $\ce{CO2}$ with different dosages ($\...
Engr Muhammad Aleem's user avatar
2 votes
1 answer
113 views

Ventilating combustion byproducts in water heaters

I'm designing a system that will heat water by burning natural gas which is commonly available. I would like to have a slow flame because water will need to reach $\mathrm{70^\circ C}$ and stay there. ...
php_nub_qq's user avatar
5 votes
1 answer
1k views

Searching for a solvent with a low carbon dioxide solubility

I would like to use a liquid solvent for some experimentation with a carbon dioxide solubility as low as possible under usual pressure and temperature conditions (say, $\pu{1 atm}$ and $\pu{293 K}$). ...
mranvick's user avatar
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24 votes
3 answers
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Why are Silicates solid while carbon dioxide is a gas?

I was under the impression that chemistry almost exclusively involves valence electrons because there isn't enough energy to strip off electrons located closer to the nucleus. If that is true, and ...
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