Sodium bisulfate properties, sodium thiosulfate properties

You can start from an ionic perspective.

NaHSO4 ionizes to generate Na ions, H ions and sulfate ions Na2SO4 ionizes to generate Na ions and sulfate ions.

Na2SO4 ionizes to form Na ions and CO3 ions.

BaCl2 can be ionized to form BA ions and Cl ions.

Then, starting from the conditions under which the metathesis reaction occurs, that is, the formation of non-ionizing substances such as water, gas, or precipitation, the reaction between ions can be carried out.

So you can know.

NaHSO4 and sodium sulfate do not react.

2NaHSO4+Na2CO3=2Na2SO4+CO2 gas +H2ONahSO4+BACl2=BaSO4 precipitation +NaCl+HCl

NaHSO4 and sodium sulfate do not react.

2NaHSO4 + Na2CO3 = 2Na2SO4 + CO2 gas + H2ONahSO4 + BACL2=BaSO4 precipitation + NaCl + HCl Considering this problem, we should start from the conditions for the metathesis reaction to occur, that is, the formation of non-ionizing substances such as water gas or precipitation, and the ion reaction can be carried out.

Sometimes it is also necessary to pay attention to the problems of strong acid to produce weak acid, strong base to weak alkali.

It cannot react with sodium sulfate.

With sodium carbonate can, 2NaHSO4 + Na2CO3 = 2Na2SO4 + H2O + CO2

with barium chloride NaHSO4 + BACL = BASO4 + NaCl + HCl

Sodium thiosulfate (Na2S2O3) is a common and important inorganic compound with a variety of important chemical properties, here are some of its properties:

1. Water solubility: sodium thiosulfate is easy to dissolve in water, with high solubility, and water is commonly used as a solvent in the preparation and treatment process.

2. Reducibility: sodium thiosulfate is a weak reducing agent, which can reduce certain metal ions to metals under acidic conditions, such as reducing Cu2+ to Cu.

3. Antioxidation: sodium thiosulfate can inhibit the oxidation reaction, and the thiosulfate ion (S2O3 2) can react with oxygen molecules to prevent oxygen from further reacting with other substances.

4. Stability: sodium thiosulfate can exist stably at room temperature and will not undergo spontaneous oxidation reaction. However, it is easy to decompose into sodium sulfite and sodium sulfate, so care should be taken to preserve it during use.

5. Catalytic effect: sodium thiosulfate can play a catalytic role in the reduction process, accelerate the reaction rate, and can be used to produce some chemicals.

In general, sodium thiosulfate has a variety of important chemical properties and is widely used in chemical, pharmaceutical, and photographic fields.

Sodium sulfate refers to the salt produced by the ionization of sulfate and sodium, sodium sulfate is soluble in water, its solution is mostly neutral, alkaline when dissolved in water, soluble in glycerol but not in ethanol. Inorganic compounds, high-purity, fine-grained anhydrous are called Yuanming powder.

Yuan Ming powder, white, odorless, bitter crystals or powders, hygroscopic. The shape is colorless, transparent, large crystals or granular small crystals. Sodium sulfate is easy to absorb water when exposed to air, and produces sodium sulfate decahydrate, also known as miscanthus nitrate, which is alkaline.

Main uses:

It is mainly used in the manufacture of water glass, glass, porcelain enamel, pulp, refrigeration mixture, detergent, desiccant, dye diluent, analytical chemical reagent, pharmaceuticals, feed, etc. At 241, sodium sulfate transforms into hexagonal crystals. In organic synthesis laboratories, sodium sulfate is one of the most commonly used post-treatment desiccant.

The preparation methods include beach field method, mechanical freezing method, salt lake comprehensive utilization method, etc.

Tanda method: The water in the raw material liquid is evaporated by using the temperature changes in different seasons in nature to crystallize the coarse miscanthus nitrate. In summer, saltwater containing sodium chloride, sodium sulfate, magnesium chloride and other components is poured into the beach field, which is evaporated by sunlight and precipitated coarse miscanthus nitrate in winter.

This method is the main method to extract miscanthus nitrate from natural resources, the process is simple, the energy consumption is low, but the operating conditions are poor, and the product is easy to mix with impurities such as mud and sand.

Mechanical freezing method: the raw material liquid is heated and evaporated by mechanical equipment, and then frozen to -5 -10 to precipitate miscanthus nitrate. In contrast to the Nada method, this method is not affected by the seasons and natural conditions. The product is ***, but the energy consumption is high.

Salt lake comprehensive utilization method: mainly used for sulfate-carbonate brackish water containing a variety of components. While extracting various useful components, the crude miscanthus nitrate is separated.

The properties of sodium thiosulfate are as follows:

It is a colorless and transparent crystal, soluble in water, and its aqueous solution is weakly alkaline. Sodium thiosulfate is stable under alkaline and neutral conditions, and easily decomposes under acidic conditions. Sodium thiosulfate is reductive and can be used as a ligand, in large quantities due to the fixer of photography.

Quantitative reactions with iodine can occur and are used in analytical chemistry for iodine titration.

Sodium thiosulfate, also known as sodium sulfite, baking soda, hypo (** in its alias sodium hyposulfite). Molecular formula: Na2S2O3·5H2O.

It is a common thiosulfate, colorless transparent monoclosed potato oblique crystal with a density of gram cm3. The melting point is 48 degrees Celsius at standard atmospheric pressure.

Sodium thiosulfate is colorless, transparent crystalline or crystalline fine grain; Odorless, salty taste; Efflorescence in dry air and deliquescent in humid air; Soluble in water, aqueous solution weak alkaline reaction; In case of strong acid, sulfur elemental and sulfur dioxide gas are produced.

With the participation of thiocyanase, it can combine with cyanide ions that are free in the body or bound to methemoglobin to form non-toxic thiocyanate that is excreted in urine and decentralizes cyanide poisoning. In addition, it can also combine with a variety of metal ions to form non-toxic sulfides that are excreted in the urine, and also have desensitization as a nuclear backup.

The chemical formula of sodium bisulfate is Nahso