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Hydrocarbons
Hydrocarbons include Alkanes, Alkenes, Alkynes, Aromatic and Alicyclic compounds.
2,710 Questions
Methane is also known as marsh gas because it is commonly found in marshes, swamps, and wetlands due to the breakdown of organic matter by bacteria under anaerobic conditions.
Two methods for preparing methane gas are:
- From the decomposition of organic matter in the absence of oxygen (anaerobic digestion): C6H12O6 → 3CO2 + 3CH4
- From the reaction between sodium acetate and sodium hydroxide: CH3COONa + NaOH → CH4 + Na2CO3
Ethers containing peroxides can be detonate as tear gas when heated. Unburned material may form powerful tear gas. When wet, also forms irritating formaldehyde gas.
Is there such thing as Carbon Sulphate?
No, carbon sulfate does not exist as a chemical compound. Sulfate compounds typically contain a sulfur atom bonded to oxygen atoms, but carbon does not naturally form sulfates.
Can you use propane in a natural gas dearborn heater?
No, it is not recommended to use propane in a natural gas Dearborn heater. Dearborn heaters are designed to work with natural gas fuel, not propane. Using propane in a natural gas heater can cause safety hazards and damage to the heater. It is important to use the correct type of fuel specified by the manufacturer for safe operation.
What is methane gas and how is it used?
Methane is a chemical compound with the chemical formula CH4. It is the simplest alkane, and the principal component of natural gas. Methane's bond angles are 109.5 degrees. Burning methane in the presence of oxygen produces carbon dioxide and water. The relative abundance of methane makes it an attractive fuel. However, because it is a gas at normal temperature and pressure, methane is difficult to transport from its source. In its natural gas form, it is generally transported in bulk by pipeline or LNG carriers; few countries transport it by truck.
Methane was discovered and isolated by Alessandro Volta between 1776 and 1778 when studying marsh gas from Lake Maggiore.
Methane is a relatively potent greenhouse gas. Compared with carbon dioxide, it has a high global warming potential of 72 (calculated over a period of 20 years) or 25 (for a time period of 100 years).[2] Methane in the atmosphere is eventually oxidized, producing carbon dioxide and water. As a result, methane in the atmosphere has a half life of seven years[citation needed].
The abundance of methane in the Earth's atmosphere in 1998 was 1745 parts per billion (ppb), up from 700 ppb in 1750. By 2008, however, global methane levels, which had stayed mostly flat since 1998, had risen to 1,800 ppb[3]. By 2010, methane levels, at least in the arctic, were measured at 1850 ppb, a level scientists described as being higher than at any time in the previous 400,000 years.[4] (Historically, methane concentrations in the world's atmosphere have ranged between 300 and 400 ppb during glacial periods commonly known as ice ages, and between 600 to 700 ppb during the warm interglacial periods).
In addition, there is a large, but unknown, amount of methane in methane clathrates in the ocean floors. The Earth's crust contains huge amounts of methane. Large amounts of methane are produced anaerobically by methanogenesis. Other sources include mud volcanoes, which are connected with deep geological faults, landfill and livestock (primarily ruminants) from enteric fermentation
What simple chemical test will distinguish an alkane from others?
Use bromine water (Br2) or acidified permanganate (H+/MnO4-) With permanganate: add the permanganate to the alkane and no reaction will occur, add the permanganate to the alkene and you will form a diol the solution will also turn from purple to colourless. With bromine water: add the bromine water to the alkane (plus you need sunlight) and you get a substitution reaction, this is a slow reaction. Add the bromine water to the alkene and you get an immediate addition reaction (this one does not need sunlight). When bromine water reacts with an alkene it is decolourised, the reddish brown bromine water turns from brown to colourless. This is because alkenes are unsaturated and contain a carbon to carbon double bond. If you did the bromine water test in a dark place say a cupboard then the alkene would decolourise but the alkane wouldn't because it needs UV/sunlight in order to react. in practice the cupboard is not necessary as the speed of decolourisation is so much faster with the alkene.
Which alcohol contains four carbon atoms and can be oxidised to a ketone?
Butan-1-ol is an alcohol that contains four carbon atoms and can be oxidized to produce butanone, also known as methyl ethyl ketone (MEK). This reaction typically involves the removal of two hydrogen atoms from the alcohol to form the ketone.
What gas in the air is essential to allow methane to burn?
Oxygen is the gas in the air that is essential for methane to burn. When methane combines with oxygen in the presence of a flame or spark, it undergoes combustion to produce water vapor and carbon dioxide.
When alkenes undergo addition reaction what kind of bond does it produce?
When alkenes undergo addition reactions, they typically form a new single bond, resulting in a saturated compound. This is because the double bond in the alkene is broken, allowing the addition of atoms or groups to each carbon of the original double bond.
What model of a hydrocarbon shows the geometry of the molecule?
A ball-and-stick model or a space-filling model can show the geometry of a hydrocarbon molecule. Ball-and-stick models represent the atoms as balls and the bonds between them as sticks, while space-filling models show the molecule as if solid and filled the space the atoms occupy. Both models can provide a visual representation of the molecular geometry of hydrocarbons.
Methane gives which planet its distinctive blue-green color?
I guess this means: Methane gives which planet its distinctive blue-green color?
Methane gives Neptune its distinctive blue-green color.
I'm not so sure about that. I think Uranus is that color, but Neptune is more
blue than blue-green. You read different things in different books though.
Neptune has Methane in its atmosphere too.
Do hydrocarbon long chains have a high or low boiling point?
Hydrocarbon long chains generally have a high boiling point compared to short chains because longer chains have more bonds to break, requiring more energy for them to vaporize. This is why long-chain hydrocarbons like waxes and oils are typically solid at room temperature.
Why is an increase in methane more worrying than an increase in Carbon Dioxide?
An increase in methane is more worrying than an increase in carbon dioxide because methane is a more potent greenhouse gas, trapping heat more effectively than carbon dioxide. Additionally, methane has a shorter lifespan in the atmosphere but contributes significantly to global warming in the short term. This makes it a critical factor in addressing climate change.
Which planets have hydrocarbon smog?
Venus and Titan are two planets in our solar system that have hydrocarbon smog. Venus's thick atmosphere is composed of carbon dioxide and sulfuric acid clouds, while Titan's atmosphere contains nitrogen and methane, forming a haze of organic aerosols.
What type of change is burning propane?
Burning propane is a chemical change because it involves a chemical reaction where the propane molecules are broken down and rearranged to form new molecules (such as carbon dioxide and water) along with the release of energy in the form of heat and light.
How is ethane obtained from ethanol?
according to me, ethane can't be prepared from ethanol.
but you can prepare ethene from ethanol by treating ethanol with conc.
H2SO4 (95%) In 440 K Temperature with release of water molecule.
How is ethane prepared from ethanol. give the reaction involved in it?
by removal of hydrogen molecule one more pi bond will be formed between carbons thus ethene will convert in ethyne
Edit by some other dude named Timaeus:
Yeah...no. That's not right at all. This is how it's done:
First, halogenation of ethene to form a vicinal dihalide. Then a second order elimination reaction, let's say using a bulky nucleophile like tert-butoxide, to convert it to a bromoethene. Then just once more with the E2 reaction to form ethyne.
How is butene different than butane?
1) Bromination: add a drop or two of dilute bromine (Br2) to the sample, if the brown color disappears, it is an alkene, and...
2) Baeyer's Test: add a drop or two of potassium permanganate (KMnO4) to the sample, if the purple color disappears, it is an alkene.
hope that helped! :)
Will something happen butane gas?
Butane gas is highly flammable and can explode if exposed to an ignition source. It is important to handle butane gas with care and follow proper safety procedures to prevent accidents. If butane gas leaks and accumulates in an enclosed space, it can pose a serious fire hazard.
Does addition reaction take place in alkenes?
Yes, addition reactions can take place in alkenes. Alkenes are typically reactive towards addition reactions because they contain π bonds, which can break to allow new atoms or groups to be added to the carbon atoms of the double bond. Examples of addition reactions in alkenes include hydrogenation, halogenation, and hydration.
Can a 100 pound propane tank operate with a gas log fireplace?
Yes, a 100 pound propane tank can operate a gas log fireplace. However, the tank may need to be refilled more frequently compared to larger tanks. It's important to follow all safety guidelines and have the system installed and maintained by a professional.
What two planets have methane in there atmosphere?
Neptune and Uranus both have high concentrations of methane in their atmospheres.
The planet you are describing is Neptune. It is known for its blue-green color due to the presence of methane in its atmosphere. Neptune has layers of water, ice, methane, and ammonia in its atmosphere, and it also has the fastest recorded winds in our solar system, reaching speeds of up to 1,300 mph.
Did they find methane in the atmosphere of Mars?
Yes, methane has been detected in the atmosphere of Mars by several instruments on spacecraft and telescopes. The presence of methane is significant because it could potentially be a sign of microbial life or geological activity on the planet. However, the exact source of the methane on Mars is still under investigation.
