Is it possible for magnesium carbonate and magnesium hydroxide to precipitate together at the same t

Magnesium carbonate and magnesium hydroxide.

It is not possible to precipitate together at the same time. Because magnesium carbonate is a microsoluble, it does not exist in the form of precipitation, and is usually converted to magnesium hydroxide and precipitated. Equation.

Magnesium carbonate can be used as refractory materials, insulation materials for boilers and pipelines, as well as additives for food, medicine, cosmetics, rubber, ink, etc. In general, it is slightly soluble in water, and it is easy to react with water (when hard water is softened) to form magnesium hydroxide when heated (because magnesium hydroxide is more insoluble than magnesium carbonate), equation:

mgco3+h2o=mg(oh)2+co2。

Application: 1. Pharmaceutical intermediates, acid desolants, desiccant.

color protection agent, carrier, anti-caking agent;

2. It is used as an additive and magnesium element in food.

compensators; 3. It is used in the production of chemical reagents in fine chemicals;

4. It is used as a reinforcing agent and filler in rubber;

5. It can be used as a heat-insulating and high-temperature resistant fireproof and thermal insulation material;

6. Important chemical raw materials in the manufacturing process of wires and cables;

7. Manufacture of high-grade glass products; Enamel.

Ceramics play a role in surface brightening;

8. Production of magnesium salts, pigments, paints, daily cosmetics, shipbuilding, boiler manufacturing;

9. It is used in the manufacture of magnesium salt, magnesium oxide, fireproof coating, ink, glass, toothpaste, rubber filler, etc., and is used as flour improver and bread leavening agent in food.

Precipitate magnesium hydroxide first, and then precipitate magnesium carbonate, the solubility of magnesium hydroxide is small, hydroxide and magnesium ions combine to precipitate first, only if there is an excess of magnesium ions, it can continue to react with carbonate.

Elite education Changning Tianshan.

Magnesium hydroxide has less solubility and precipitates first, and magnesium carbonate has greater solubility and then precipitates.

Yes, and magnesium hydroxide is formed because of its low solubility, and magnesium carbonate is formed.

Magnesium hydroxide is a precipitate. Magnesium hydroxide is an inorganic substance, the chemical formula is mg(OH)2, white amorphous powder or colorless hexagonal column crystal, soluble in dilute acid and ammonium salt solution, almost insoluble in water, the part soluble in water is completely ionized, and the aqueous solution is weakly alkaline.

Because magnesium hydroxide is abundant in nature, and its chemical properties are similar to aluminum, users have begun to use magnesium hydroxide instead of aluminum chloride for deodorant products. It is used as an analytical reagent and is also used in the pharmaceutical industry.

Applications:

Magnesium hydroxide is an excellent flame retardant for plastic and rubber products. In terms of environmental protection, it can be used as a flue gas desulfurizer, and can replace caustic soda and lime as a neutralizer for acid-containing wastewater. It is also used as an oil additive to play the role of anti-corrosion and desulfurization.

In addition, it can also be used in the electronics industry, medicine, sugar refining, as insulation materials and other magnesium salt products.

The above content reference: Encyclopedia - magnesium hydroxide.

Magnesium hydroxide has very little solubility and is a precipitate.

Yes; [Remember: In addition to sodium hydroxide, potassium hydroxide, barium hydroxide, and ammonia water are soluble, calcium hydroxide is slightly soluble, and other hydroxides are insoluble, that is, precipitation. I don't know how to ask again. 】

Magnesium hydroxide precipitation, in chemical changes, generally speaking, there are eight major precipitates, of which silver chloride and barium sulfate are insoluble in acid, and the other six precipitates are soluble in acid, calcium carbonate, barium carbonate, silver chloride, magnesium hydroxide, aluminum hydroxide, and barium sulfate are white.

Magnesium hydroxide, white amorphous powder. Also known as caustic magnesia, lightly burned magnesia, etc., the suspension of magnesium hydroxide in water is called magnesium hydroxide emulsion, referred to as magnesia milk.

No. Magnesium carbonate.

It is a microsoluble substance, which generally does not exist in the state of precipitation, so it does not define magnesium carbonate by the nature of precipitation, and magnesium carbonate is usually converted into magnesium hydroxide.

Precipitation. When a microlysate is dissolved in water to form a saturated solution, it is necessary to add the microlysate to produce a precipitate. It decomposes at 350 and loses its head dioxide at 900.

Its trihydrate is a colorless needle-like crystal with a melting point of 165 and a relative density. Its pentahydrate is a white monoclinic crystal, with relative density, which is heated in the air and decomposes. Carbon dioxide can be introduced into the aqueous magnesium brine solution and sodium carbonate can be added at the same time.

To obtain hydrate, dry the hydrate below 50 to obtain anhydrous.

Magnesium hydroxide is not a precipitate. The main components of the precipitation are calcium carbonate, magnesium carbonate, calcium sulfate, magnesium sulfate, calcium chloride, magnesium chloride, etc.

Precipitation formation process.

At high temperature, calcium sulfate containing slightly soluble in water will precipitate due to the evaporation of water, and the carbonate in the water will combine with calcium and magnesium ions to form calcium carbonate and magnesium carbonate that are insoluble in water, that is, water alkali. With the continuous evaporation and concentration of water, the water alkali content continues to increase, and scale is formed after reaching saturation.

Magnesium hydroxide chemical properties.

Magnesium hydroxide is a medium-strong alkali, heated to 623K (350), that is, dehydrated and decomposed: Mg(OH) 2 mGo+H2O, soluble in acid or ammonium salt solution. Like magnesium oxide, it easily absorbs carbon dioxide from the air and gradually forms a basic carbonate composed of 5mgo·4CO2·XH2O.

It decomposes into magnesium oxide and water above 350, but can only be completely dehydrated above 1800.

Application of magnesium hydroxide.

It is used in the manufacture of magnesium salt, the refining of sugar, the pharmaceutical industry, and the daily chemical industry. At the same time, the water vapor emitted by it can also be used as a smoke suppressant. Magnesium hydroxide is an excellent flame retardant in the rubber and plastic industry with the triple functions of flame retardant, smoke suppression and filling.

The emulsion suspension of magnesium hydroxide is medically used as an antacid and laxative.

Precipitation. Magnesium hydroxide is poorly soluble in water and is a deposit. Magnesium hydroxide is a white crystal or powder. Insoluble in water and alcohol, insoluble in dilute acid and ammonium salt solution.

pH range of magnesium hydroxide completely precipitated.

Iron hydroxide:,Aluminum hydroxide:,Zinc hydroxide:

It is generally considered that the ion concentration is less than 10 exp (-5) (-5 to the power of 10) to be the precipitation complete. The pH at the beginning of the precipitation is related to the initial concentration of the metal ions.

In industry, seawater is often reacted with calcium hydroxide solution (lime milk) to obtain magnesium hydroxide precipitation. In addition to sodium hydroxide, potassium hydroxide, barium hydroxide, ammonia soluble, calcium hydroxide is slightly soluble, and other hydroxides are insoluble, that is, precipitation.

Magnesium hydroxide is a colorless hexagonal column crystal or white powder, insoluble in water and alcohol, soluble in dilute acid and ammonium salt solution, and the aqueous solution is weakly alkaline. The solubility in water is small, but the part dissolved in water is completely ionized.

Mg(OH)2 is a precipitate that can be soluble in acids.

Magnesium carbonate is the pre-lake of ShentongThe solubility of magnesium carbonate in water is relatively small, it is a substance slightly soluble in water, and there will be no solids left after stirring after adding a small amount of magnesium carbonate to the solution, but a little excess will become a precipitate.

Magnesium carbonate is slightly soluble in cold water and slowly soluble in acid. Its trihydrate is a colorless needle-like crystal with a melting point of 165 and a relative density. Its pentahydrate is a white monoclinic crystal with relative density, which is heated and decomposed in air.

Usage:

1. It is used in the manufacture of magnesium salt, magnesium oxide, fireproof coatings, inks, glass, toothpaste, gelatin fillers for rubber curvers, etc., and is used as flour improver and bread leavening agent in food.

2. Neutralize gastric acid.

3. Alkaline agent, desiccant, buried color protection agent, anti-caking agent, carrier, leavening agent and acidity regulator. The EEC is approved for: table salt, powdered sugar, acidified cream, milk, ice cream, biscuits.

It is used in the preparation of chemical leavening agents. The amount of residues in food should not be greater than that of Japan). It is used to prevent the clumping of table salt, the amount added.

Magnesium carbonate can be used as a refractory material, insulation material for Pishuling boilers and pipes, as well as additives for food, medicine, cosmetics, rubber, ink, etc. The relative molecular mass of magnesium carbonate is 84.

Is magnesium carbonate a precipitate

Magnesium carbonate is a precipitate, the solubility of magnesium carbonate in the water is relatively small, it is a substance slightly soluble in water, a small amount of magnesium carbonate is added to the solution, and there will be no solid residue after stirring, but a slight excess will become a precipitate.

White monoclinic crystalline or amorphous powder. Non-toxic, odorless and stable in gas. Relative density. Slightly soluble in water, the aqueous solution is weakly alkaline, and the solubility in water is.

manufacturing high-grade glass products; Enamel ceramics play a role in surface brightness; Manufacture of magnesium salts, pigments, paints, cosmetics, shipbuilding, boiler manufacturing. and athletes' competitions.

Storage

Store in a cool, ventilated warehouse. The storage temperature should not exceed 37°C. It should be stored separately from oxidants and edible chemicals, and should not be mixed.

Keep the container tightly sealed. Keep away from fire and heat sources. The warehouse must be equipped with lightning protection equipment.

The exhaust system should be equipped with a grounding device to dissipate static electricity. Explosion-proof lighting and ventilation are adopted. It is forbidden to use equipment and tools that are prone to sparks.

The storage area should be equipped with emergency response equipment for spills and suitable containment materials.