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How to distinguish methane from carbon monoxide?
Ignite methane and carbon monoxide, cover the dry cold beaker, the water droplets on the inner wall of the beaker are methane, and carbon monoxide is generated without water droplets.

The most basic oxidation reaction of methane is combustion: CH? +2O? →CO? +2H? O. The hydrogen content of methane is the highest among all hydrocarbons, reaching 25%, so gaseous hydrocarbons with the same mass are completely burned, and the oxygen consumption of methane is the highest.

Carbon monoxide is ignited in the air to produce carbon dioxide. Chemical equation: 2CO+O? =CO? . When it burns, it gives off a blue flame and gives off a lot of heat. Therefore, carbon monoxide can be used as a gas fuel.

Extended data

1776165438+10 In October, Italian physicist Alessandro Volta discovered methane in Lago Maggiore, Switzerland according to Benjamin Franklin's paper on "combustible air".

Walter collected methane from the swamp until 1778, and he successfully separated pure methane gas. He also successfully ignited methane gas with an electric spark device to determine the flammability of methane.

Methane is a very important fuel and the main component of natural gas, accounting for about 87%. Methane is not a toxic gas, but it is very flammable and may cause an explosion when mixed with air. Methane is also a suffocating gas, which may replace oxygen in a confined space. If the oxygen content is less than 19.5% after being replaced by methane, it may lead to suffocation.

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