What Is the Connection Between Barium Chloride and Sulfuric Acid?

Sulfate, also known as sulfate ion, has the chemical formula SO². In the SO² ion, the S atom is sp3 hybrid, the ion has a regular tetrahedron structure, the sulfur atom is located at the center of the regular tetrahedron, and the 4 oxygen atoms are located at the four vertices of the regular tetrahedron. The S-O bond has a bond length of 149pm and has a large degree of double bond properties. The bonds between the four oxygen and sulfur atoms are exactly the same. ^{[1] It} exists in solid and aqueous solutions of sulfuric acid aqueous solution, sulfate, hydrogen sulfate and the like.

[Ionic structure] Sulfate is a tetrahedral structure formed by a sulfur atom and four oxygen atoms connected by a covalent bond. The sulfur atom is sp3

1.Sulfur dissolved in water

There are many methods for detecting sulfate content at home and abroad, including gravimetry,

Sulfate is very common, and the ion that appears in its solid salt often carries anionic crystalline water, because water molecules are connected to the oxygen atoms above by hydrogen bonds.

(1) Agricultural use

Potassium sulfate is a common potassium fertilizer.

Sulfate is often present in water, and its main source is the sulfate of formation minerals, mostly in the form of calcium sulfate and magnesium sulfate; dissolution of gypsum and other sulfate deposits; seawater intrusion, sulfite and thiosulfate Oxidation in the air, and domestic wastewater, chemical fertilizers, sulfur-containing geothermal water, mining wastewater, industrial wastewater using sulfate or sulfuric acid in tanning, paper manufacturing, etc., can increase the sulfate content in water.

(1) Harm to the human body

The main physiological reactions that occur after large intakes of sulfate are diarrhea, dehydration, and gastrointestinal disorders. People often use water with a magnesium sulfate content of more than 600 mg / L as a drainage agent. When the mass concentrations of calcium sulfate and magnesium sulfate in water reached 1000 mg / L and 850 mg / L, respectively, half of the people thought the taste of the water was unpleasant and unacceptable.

(2) Harm to the environment

There are many metal ions in the environment that can be combined with sulfate to form stable sulfates. The sulfur dioxide gas formed by sulfates in the atmosphere has a corrosive effect on materials, endangers the health of animals and plants, and can play a catalytic role. After the precipitation reaches the ground, it destroys the soil structure, reduces soil fertility, and causes corrosion to the water transport system.

(3) Corrosion to concrete

The sulfate content in the water exceeds a certain value, which will cause crystalline corrosion of the concrete, that is, the sulfate reacts with the calcium hydroxide in the concrete to form dihydrate gypsum crystals, which then chemically react with the calcium aluminate hydrate. The reaction produces hydrated calcium sulphoaluminate, which is a complex sulfate of aluminum and calcium, commonly known as C. bacilli. Because C. bacillus combines a lot of crystal water, its volume is much larger than that before compounding, which is more than twice the original volume. Therefore, a large internal stress is generated in the concrete and the structure of the concrete is damaged. Accurately determine the sulfate content in groundwater in order to take corresponding measures to avoid or reduce the erosion of sulfate on concrete. ^[4]