Question

a mixture contains ethene,hydrogen and ammonia gases .How can a sample of hydrogen gas be obtained from the mixture.[can a genius who is out there pretty pliz help]

Answer 1

Answer:

Syngas, or synthesis gas, is a fuel gas mixture consisting primarily of hydrogen, carbon monoxide, and very often some carbon dioxide. The name comes from its use as intermediates in creating synthetic natural gas (SNG)[1] and for producing ammonia or methanol. Syngas is usually a product of coal gasification and the main application is electricity generation. Syngas is combustible and can be used as a fuel of internal combustion engines.[2][3][4] Historically, syngas has been used as a replacement for gasoline, when gasoline supply has been limited; for example, wood gas was used to power cars in Europe during WWII (in Germany alone half a million cars were built or rebuilt to run on wood gas).[5] Syngas, however, has less than half the energy density of natural gas.[1]

Syngas can be produced from many sources, including natural gas, coal, biomass, or virtually any hydrocarbon feedstock, by reaction with steam (steam reforming), carbon dioxide (dry reforming) or oxygen (partial oxidation). Syngas is a crucial intermediate resource for production of hydrogen, ammonia, methanol, and synthetic hydrocarbon fuels. Syngas is also used as an intermediate in producing synthetic petroleum for use as a fuel or lubricant via the Fischer–Tropsch process and previously the Mobil methanol to gasoline process.

Production methods include steam reforming of natural gas or liquid hydrocarbons to produce hydrogen, the gasification of coal,[6] biomass, and in some types of waste-to-energy gasification facilities.

Answer 2

Answer:

To separate hydrogen from a mixture of ethane, hydrogen and ammonia the following procedure can be followed:-

• First of all, the mixture of three gases will be passed through the water. As we know that ammonia is highly soluble in water, it will dissolve into  water.

• Now only two gases, ethane and hydrogen will remain in the mixture. To separate these two gases, we can adopt the fractional distillation method.
• In fractional distillation, the mixture is cooled to form its liquid then followed by heating. The gas has lower boiling point  will rise in the distillation column.
• We know that the boiling point of ethane is - 89°C and the boiling point of hydrogen is - 252.9 °C. Hence, hydrogen gas has lower boiling point will rise in the distillation column. In this way the hydrogen can be obtained from the mixture.

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