What Is the Connection Between Ammonia and Sulfuric Acid?

Ammonia, Ammonia, NH ₃ , colorless gas. Has a strong irritating odor. The density is 0.7710g / L. The relative density is 0.5971 (air = 1.00). Easily liquefied into a colorless liquid. It can be liquefied by pressing at normal temperature (critical temperature 132.4 ° C, critical pressure 11.2 MPa, which is 112.2 atmospheres). Boiling point is -33.5 ° C. It is also easily solidified into a snow-like solid. Melting point -77.75 ° C. Soluble in water, ethanol and ether. At high temperatures, it will decompose into nitrogen and hydrogen, which has a reducing effect. In the presence of a catalyst, it can be oxidized to nitric oxide. Used for making liquid nitrogen, ammonia, nitric acid, ammonium salts and amines. It can be produced by the direct synthesis of nitrogen and hydrogen, which can burn the mucous membranes of the skin, eyes, and respiratory organs. Excessive inhalation by humans can cause lung swelling and even death ^[1] .

A nitrogen atom has 5 valence electrons, 3 of which are unpaired. When it is combined with a hydrogen atom, each nitrogen atom can pass through 3 hydrogen atoms.

At normal temperature and pressure, 700 volumes of ammonia can be dissolved in one volume of water.

Fill a dry round-bottomed flask with ammonia and stopper the stopper with a stopper with a glass tube and a dropper (pre-inhaled water in the dropper). Immediately invert the flask, insert the glass tube into a beaker of water (a small amount of phenolphthalein test solution was added to the water in advance), and install the experimental device. Open the clamp of the rubber tube and squeeze the tip of the dropper to allow a small amount of water to enter the flask. Observe the phenomenon.

The basic principle of the experiment is to make a large pressure difference between the inside and outside of the flask in a short time. The atmospheric pressure is used to press the liquid in the beaker below the flask into the flask, forming a fountain at the mouth of the needle nozzle.

method one:

Use moist

Ammonia is used in the manufacture of ammonia water, nitrogen fertilizers (urea, ammonium carbonate, etc.), compound fertilizers, nitric acid, ammonium salts, soda ash, etc., and is widely used in chemical, light industry, fertilizer, pharmaceutical, synthetic fiber and other fields. Nitrogen-containing inorganic salts and organic intermediates, sulfa drugs, polyurethanes, polyamide fibers, and nitrile rubber all require ammonia as the raw material directly. In addition, liquid ammonia is often used as a refrigerant, and ammonia can also be used as a biofuel to provide energy.