Question

Опишите физические свойства метана

Answer 1

Метан- газ без цвета и запаха, почти в два раза легче воздуха, мало растворим в воде.

Answer 2

Physical Properties of Methane

Methane is a chemical compound with the molecular formula CH4. It is a colorless, odorless gas at room temperature and standard pressure.

State at Room Temperature and Pressure: - Methane is a gas at room temperature and standard pressure, with a boiling point of approximately -161.5 degrees Celsius and a melting point of approximately -182.5 degrees Celsius.

Density and Solubility: - The density of methane is approximately 0.717 kg/m³ at 0 degrees Celsius and 1 atmosphere of pressure. It is less dense than air and is insoluble in water, but it is soluble in organic solvents.

Flammability: - Methane is highly flammable, forming explosive mixtures with air. Its flammability range is between 5% and 15% in air, making it a significant fire and explosion hazard.

Greenhouse Gas Potential: - Methane is a potent greenhouse gas, with a global warming potential 25 times greater than that of carbon dioxide over a 100-year period. It contributes to climate change and is a focus of environmental concern.

Chemical Structure: - Methane consists of a single carbon atom bonded to four hydrogen atoms. It is the simplest alkane and belongs to the hydrocarbon group.

Sources and Uses: - Methane is a major component of natural gas and is produced by various natural and human-related processes, including the decay of organic matter, livestock digestion, and fossil fuel extraction. It is used as a fuel for heating, cooking, and electricity generation, as well as a chemical feedstock for the production of various compounds.

Toxicity: - Methane is not considered toxic, but it can displace oxygen in confined spaces, leading to an asphyxiation hazard. However, it is not considered a significant health risk at typical environmental concentrations.

These properties make methane an important compound with diverse applications and environmental implications.