All equations for nitrogen in high school chemistry

All of nitrogen and its compoundsChemical equations：n2+3h2=2nh3、n2+o2=2no、4nh3+5o2=4no+6h2o、nh3+hcl=nh4cl、nh3+h2o=nh3+h2o。

Nitrogen is a chemical element.

Its chemical symbol is n, and its atomic number is 7. Nitrogen is the most abundant element in the air, which is widely present in nature and has a great role in living organisms, and is a component of amino acids.

One of the basic elements.

Valency of nitrogenNitrogen has different valencies in different compounds, and the valencies of nitrogen in common nitride sails are as follows

1. N2O (nitrous oxide.

1 price. 2. N2 (nitrogen): 0 valence.

3. NO (nitric oxide.

2 valence. 4. N2O3 (nitrous oxide): +3 valence.

5. nano3 (sodium nitrate.

5 valence. 6. Mg3N2 (magnesium nitride): -3 valent. Eggplant.

The above content refers to Encyclopedia-Nitrogen.

Chemical equation for nitrogen and its compounds.

As follows: N2+3H2=2NH3

n2+o2=2no

4nh3+5o2=4no+6h2o

nh3+hcl=nh4cl

nh3+h2o=nh3+h2o

Physical. It is mainly present in the air, accounting for about 78% of the total volume of air and 75% of the total mass. Colorless, odorless, insoluble in water. The density is slightly less than air.

Chemical properties. n n Is it easy to disconnect? The conclusion is that three pairs of electrons are shared, the bond energy is 946 kJ mol, and in general, N2 is very stable.

The reaction of nitrogen-forming compounds is haphazard and difficult to carry out. Only metals with a smaller radius can form nitrides, such as 6Li+N2=2Li3N.

Chemical nitrogen fixation (ammonia synthesis).

Reaction principle: N2+3H2== (reversible, high temperature and high pressure catalyst) 2NH3 (the forward reaction is an exothermic reaction), which is a reversible reaction with the total volume of the gas shrinking and exothermic. Preparation of raw gas:

N2: Liquefy and evaporate the air to separate N2 or react with carbon in the air to form CO2, and then remove CO2 to obtain N2.

H2: Produced with water and fuels (coal, coke, oil, natural gas, etc.) at high temperatures. The main reaction of producing H2 from coal and water is:

c+h2o（g）=△=co+h2；CO+H2O(g)= Catalyst=CO2+H2O

The prepared N2 and H2 need to be purified and impurities removed. The pressure is reduced to high pressure in the use of a high-pressure machine.

Generally, there are 2 of them, one is N2 + 3H2==Heating ==2NH3 (also need to add catalyst).

There is also N2 + O2==Discharge==2NO

1 Lightning action: N2 + O2 = (energized) = 2NO; 2no+o2=2no2; h2o+3no2=2hno3+no

Exactly, "thunderstorms fertilize crops".

2 Bacterial nitrogen fixation: Rhizobia in soybean roots can convert nitrogen into the form of ammonia (NH3).

The principle is approximately: N2 + 3H2 = = Bacterial action = = 2NH3

Nitrogen can be fixed by lightning in the sky.

n2 + o2=2no 2no + o2= 2no2 3no2+ h2o=2hno3+no

Nitrogen fixation can also be achieved by rhizobia.

Artificial nitrogen fixation is synthesized with nitrogen and hydrogen under the conditions of high pressure, high temperature and catalyst N2 + 3H2 = high temperature, high pressure, catalyst (reversible) = 2NH3

Nitrogen fixation mainly refers to the process by which free nitrogen reacts to produce chemical nitrogen.

Nitrogen in its free state is nitrogen; The nitrogen in the chemical state is mainly positive or negative value;

Nitrogen that becomes positive can be: N2 + 3H2 High Temperature, High Pressure, Catalyst 2NH3

Nitrogen that becomes negative valent can have: N2 + O2 high-voltage discharge 2NO, and the reaction mechanism of biological nitrogen fixation (legumes) is too complex.

All chemical equations for nitrogen and its compounds: N2+3H2=2NH3, N2+O2=2NO, 4NH3+5O2=4NO+6H2O, Slippery NH3+HCl=NH4Cl, NH3+H2O=NH3+H2O.

Nitrogen is a chemical element whose chemical symbol is n and its atomic number is 7. Nitrogen is the most abundant element in the air, which exists widely in nature and also has a great effect in living organisms, and is one of the basic elements that make up aminobenic acid.