What is hydrogen 30 and what gas is hydrogen

Hydrogen is the lightest known gas in the world. Its density is very small, only 1 14 of air, i.e. at standard atmospheric pressure, 0, the density of hydrogen is. Therefore, hydrogen can be used as the filling gas of the airship (because hydrogen is flammable and not very safe, the airship is now mostly filled with helium).

Hydrogen is mainly used as a reducing agent.

A colorless, odorless, combustible gas, because it is the least dense element, so it takes homophonic (light gas) hydrogen.

A gas with the chemical formula H2, lighter than air, colorless, odorless, and flammable.

Hydrogen, with the chemical formula H and molecular weight, is a highly flammable gas at room temperature and pressure.

It is a colorless and transparent, odorless and odorless gas that is insoluble in water. Hydrogen is the least dense gas known in the world, the density of hydrogen is only 1 14 of air, that is, at 1 standard atmosphere and 0, the density of hydrogen is.

Therefore, hydrogen can be used as a filling gas for airships and hydrogen balloons (because hydrogen is flammable and not safe, airships are now mostly filled with helium). Hydrogen is the substance with the smallest relative molecular weight, with strong reducibility, and is often used as a reducing agent to participate in chemical reactions.

Hydrogen (H2) was first artificially produced in the early 16th century by placing the metal in a strong acid. 1766 In 1781, Henry Cavendish discovered the element hydrogen, which was burned to produce water, according to which Lavoisier named it "hydrogenium" (meaning "substance that produces water", "hydro" means "water", "gen" means "generated", "ium"."is a universal suffix for elements). In the 50s of the 19th century, when the British physician Hexin (1855) wrote the "New Edition of Naturalism" (1855), he translated "hydrogen" as "light gas", which means the lightest gas.

Physical. Hydrogen is a colorless gas and less dense than air (among all gases, hydrogen has the least density. Under standard conditions, the mass of 1 liter of hydrogen is grams, which is much lighter than air for the same volume).

Because hydrogen is poorly soluble in water, it can be collected using the drain gas collection method.

In addition, at a standard atmospheric pressure, at temperature, hydrogen can be converted into a colorless liquid; , it becomes a snow-like solid. At room temperature, hydrogen is very stable and does not easily react with other substances. But when the conditions change (e.g., ignition, heating, use of catalysts, etc.), the situation is different.

For example, hydrogen has strong activity after being adsorbed by metals such as palladium or platinum (especially adsorbed by palladium). Palladium metal has the strongest adsorption effect on hydrogen. When the volume fraction in the air is 4%-75%, it can cause ** when it encounters an ignition source.

Hydrogen is a colorless and odorless gas with a density of grams (the lightest gas) under standard conditions, and is poorly soluble in water. At -252, it becomes a colorless liquid, and at -259, it becomes a snowflake-like solid.

Hydrogen is a colorless, odorless, flammable, explosive, and insoluble gas in water. Its density is very small, only 1 14 of the density of air, and the industry generally uses natural gas or water gas to produce hydrogen, rather than the method of electrolysis of water with high energy consumption.

Hydrogen is a gas made up of two hydrogen atoms. From an isotope point of view, there are three types of hydrogen elements or hydrogen atoms, namely deuterium, deuterium, and tritium, and the most abundant of the three isotopes is deuterium, followed by deuterium. Deuterium accounts for about 150 ppm of all hydrogen elements, meaning that there are 150 deuterium in a million hydrogen atoms, and the rest is basically all deuterium, and the proportion of tritium is negligible.

Uses of Hydrogen:

1. Hydrogen is an ideal fuel. Hydrogen is abundant, and water is the storehouse of hydrogen. Hydrogen is the combustion product of water, and once the technology of using solar energy to produce cheap hydrogen from water is broken, hydrogen will become an inexhaustible source of energy.

Hydrogen emits three times more heat than gasoline of the same mass when burned and pollutes less. Liquid hydrogen is a high-energy fuel that can be used to launch rockets and spacecraft. Therefore, hydrogen is a promising fuel.

2. Using the property that hydrogen can take oxygen from oxygen-containing compounds, the metallurgical industry can smelt metals. For example, tungsten and molybdenum, which are important metals in both the military and civilian industries, are refined from hydrogen.

Hydrogen (H2) is a colorless and odorless diatomic gas with a relative air density of , making it the lightest element.

At room temperature and pressure, gaseous hydrogen does not react with most substances, but at higher pressures and moderate temperatures, hydrogen undergoes catalytic reactions with many hydrocarbon materials. At normal pressure and high temperatures, hydrogen reacts with oxygen and other gases, many metals and metal oxides, and is a highly efficient reducing agent.

Liquid hydrogen has a normal boiling point of c and is the hottest cryogenic gas other than helium. Hydrogen is a gaseous fuel that burns with a transparent flame that is difficult to see, and water is the only product of combustion.

Main uses:

1. In the petrochemical industry, hydrogenation is required to refine through desulfurization and hydrocracking.

2. Another important use of hydrogen is the hydrogenation of fats in margarine, edible oils, shampoos, lubricants, household cleaners and other products.

3. In the high-temperature processing process of glass manufacturing and the manufacture of electronic microchips, hydrogen is added to the nitrogen protective gas to remove residual oxygen.

4. It is used as a raw material for synthetic ammonia, methanol and hydrochloric acid, and a reducing agent for metallurgy.

5. Due to the high fuel properties of hydrogen, the aerospace industry uses liquid hydrogen as fuel.

The above content refers to Encyclopedia - Hydrogen.

At room temperature and pressure, hydrogen is a highly flammable, colorless, transparent, odorless, and odorless gas. Hydrogen is the least dense gas known in the world. Hydrogen can be used as a filling gas for airships and hydrogen balloons.

Hydrogen is the smallest substance in terms of relative molecular mass and is mainly used as a reducing agent. Jujube touch.

Hydrogen was first produced artificially in the early 16th century by placing the metal in a strong acid. Between 1766 and 1781, Henry Cavendish discovered hydrogen.

At present, hydrogen is generally produced from natural gas or water gas, instead of using the energy-intensive method of electrolysis of water. The hydrogen produced is used in large quantities for cracking reactions and ammonia production in the petrochemical industry.