About the quality of anhydrous copper sulphate

Because there is crystal precipitation, it can be seen that the filtrate is a saturated solution of copper sulfate, 40 (100+40)*grams, which is the copper sulfate in the filtrate, so there are grams of water in the filtrate, so there are 15-6 grams of water in the copper sulfate crystal, 160 90*9=16 grams, so the mass of copper sulfate in the crystal is 16 grams.

So the total mass of anhydrous copper sulphate is 16+ grams.

Solution: Let the mass of copper sulfate in the remaining filtrate be x, because the solution must be a saturated solution (because of the precipitated crystals) so: :140; Solution: x=

So the remaining water in this solution is:

The precipitated copper sulfate crystals contain 15-6 = 9g of water

The precipitated copper sulfate crystal contains copper sulfate: 9 18 5 * 160 = 16g, so the total copper sulfate added is.

At this temperature, the solubility of anhydrous copper sulfate is 40 grams, and the gram filtrate is a saturated solution, otherwise the blue crystals of copper sulfate pentahydrate will be dissolved.

Among them, the CuSO4 content is: grams, and the water content is 6 grams, then the water content in the blue crystal is 15-6=9 grams, and the ratio of CuSO4 to water in copper sulfate pentahydrate is:

cuso4:5h2o

Contains cuso4 is 16 grams, cuso4 total grams.

The differences between anhydrous copper sulphate and copper sulphate pentahydrate are as follows:

Difference 1, the color is different.

Anhydrous copper sulphate is white or off-white powder, and copper sulphate pentahydrate is blue.

Difference 2: The chemical formula is different.

Anhydrous copper sulfate is the chemical formula CuSO4, and copper sulfate pentahydrate is CuSO4·5H2O.

Difference 3: The structural stability is different.

The structural stability of anhydrous copper sulfate is not as good as that of copper sulfate pentahydrate.

The introduction of copper sulfate is as follows:

Copper sulphate is an inorganic compound with the chemical formula cuso, and anhydrous copper sulphate is a white or off-white powder.

Copper sulphate is both a fertilizer and a commonly used fungicide. Bordeaux liquid, copper soap liquid, and copper ammonium preparations are made of copper sulfate with lime milk, soap, and ammonium bicarbonate.

The introduction of copper sulfate pentahydrate is as follows:

The physical and chemical properties of copper sulfate pentahydrate are transparent dark blue crystals or powders, with a solubility of 316 grams in 0 water, insoluble in ethanol, almost insoluble in most other organic solvents. It is ruby green in glycerin, slowly weathered in air, lost two molecules of crystal water (30) by heating, and lost water at 110 to become white hydrate (Cus04H20).

When it contains impurities, it is yellow or green, and has no odor. This product is very corrosive to iron. Copper sulphate is both a fertilizer and a commonly used fungicide.

Bordeaux liquid, copper soap liquid, and copper ammonium preparations are made of copper sulfate, quicklime, soap, and ammonium bicarbonate.

Copper sulfate (cupric sulfate) is an inorganic compound with the chemical formula CuSO4. It is a white or off-white powder, and the aqueous solution is weakly acidic and blue. When crystallized from an aqueous solution, blue copper sulfate pentahydrate (CuSO4·5H2O, also known as bile alum) is generated, and this principle can be used to test the presence of water.

It decomposes after losing crystal water after being heated, and is very stable at room temperature and pressure, without deliquescent, and will gradually weathered in dry air. Copper sulphate is an important raw material for the preparation of other copper-containing compounds. Bordeaux liquid can be obtained by mixing with lime milk, which is used as a fungicide.

It is also used as an electrolyte for electrolytic refining of copper.

Copper sulphate is divided into anhydrous and copper sulphate pentahydrate, which have the same pronunciation. Anhydrous means no crystal water, and five water means five crystal water. When copper sulfate is dissolved in water, five crystalline waters are lost and ionized into copper ions and sulfates.

Anhydrous copper sulphate is a white powder that turns blue when exposed to water. Copper sulfate pentahydrate, commonly known as blue alum, bile alum, that is, copper sulfate crystals, as the name suggests, is blue in itself. No matter what kind of solid, as long as it is soluble in water, it becomes copper ions and sulfate ions.

Of course, the solution is blue, and the reason for the blue color is that copper ions and water form ligand ions - copper ions tetrahydrate.

It is copper sulphate without crystalline water: cuso4 It is a white solid and belongs to the salt group.

Generally, copper sulfate crystals have 5 crystalline water, which is called bile alum or blue alum: CuSO4·5H2O.

Anhydrous copper sulphate usually refers to copper sulphate, which does not contain crystalline water, and its appearance is usually a powder ink, rather than a transparent crystal.

Anhydrous copper sulfate is a white crystal, belonging to salt, it turns blue when exposed to water, it is commonly used in chemistry to test the existence of water vapor, it is soluble in water, the aqueous solution is blue, and the chemical formula is CuSO4.

Anhydrous copper sulfate is an inorganic compound, the chemical formula CuSO4, is a white or off-white powder, the aqueous solution is weakly acidic, and it is blue.

Anhydrous copper sulfate is a white solid, soluble in water, the aqueous solution is blue, the crystal precipitated from the copper sulfate solution is blue, commonly known as bile alum living blue alum, containing crystal water, the chemical formula is, bile alum can lose crystal water when heated, becoming white cuso4.

The chemical formula of anhydrous copper sulfate CuSO4 is a white powder, the relative density is, and the solubility in water at 25 is insoluble in ethanol and ether, soluble in water, and the aqueous solution is blue, which is a strong acid and weak alkali salt, and is weakly acidic due to the hydrolyzed solution.

Concentrate and crystallize the copper sulfate solution to obtain copper sulfate blue crystals of pentahydrate, commonly known as bile alum, copper alum or blue alum, the relative density is, bile alum is very stable at room temperature and pressure, not deliquescent, it will gradually weathered in dry air, and it will lose two molecule crystal water when heated to 45, and lose all crystal water to become anhydrous at 150.

The role of anhydrous copper sulphate:

1. It is used to make other feed salts.

Such as cuprous chloride, copper chloride, copper pyrophosphate, cuprous oxide, copper acetate, copper carbonate, etc., dyes and pigments industry are used to manufacture copper-containing monoazo dyes such as reactive brilliant blue, reactive violet, etc.

2. Copper sulfate solution analysis reagent.

Several chemical analyses require anhydrous copper sulfate, which is used in the Filin reagent and Ban's reagent to detect reducing sugars, in the reaction, divalent copper ions are reduced to monovalent insoluble red precipitated cuprous oxide, anhydrous copper sulfate can also be used in biurea reagent for the detection of proteins.

3. Organic synthesis of copper sulfate solution Copper sulfate can be used for organic synthesis.

Anhydrous salts are used to catalyze the transacetal reaction, anhydrous salts react with potassium permanganate to form an oxidizing agent for the conversion of primary alcohols, and are used in the organic industry as catalysts for the synthesis of spices and dye intermediates, and polymerization inhibitors for methyl methacrylate.

4. It is used to kill fungi.

Mixed with lime water to form Bordeaux liquid, as a fungicide, used to control fungi on lemon, grape and other crops, because copper ions are toxic to fish, the dosage must be strictly controlled, in addition, aquaculture is also used as the main raw material for feed additives trace element copper.

Anhydrous copper sulfate is a white solid, and it reacts with water to form copper sulfate pentahydrate, which is blue. There will be blue crystal precipitation, because anhydrous copper sulfate will combine with water to form copper sulfate crystals, so that the solvent mass in the saturated solution is reduced, so there are more crystals precipitated, but generally will not be absorbed.

Equation: Cuso +5H O===CuSO5Ho Copper sulfate is an important raw material for the preparation of other copper-containing compounds. Bordeaux liquid can be obtained by mixing with lime milk, which is used as a fungicide. It is also used as an electrolyte for electrolytic refining of copper.

It is very easy to absorb water vapor in the air and turn it into hydrate. Crystal water is lost after heating, and two crystal water is lost when heated to 102; 113 Loss of three crystalline waters; 258 Lose all crystal water; When the heating temperature reaches 653, the decomposition begins to generate ruler cuo and so, and the decomposition ends at 720.

In the crude product copper sulfate, add an appropriate amount of water, heat it into a saturated laughing solution, and filter it while hot to remove insoluble impurities. The filtrate is cooled, copper sulfate is precipitated, filtered, and separated from soluble impurities to obtain pure copper sulfate. Take the ascension to knowledge

Anhydrous copper sulfate precautions

1. Hydrogen peroxide should be added slowly and dropwise.

2. When filtering while hot, the filter device should be cleaned and preheated first; Prepare the filter paper and re-wet it when it is filtered.

3. Heat and concentrate in a water bath until there is a crystal film on the surface, and the solution cannot be evaporated.

4. The concentrate is naturally cooled to room temperature.

5. When recrystallizing, adjust the pH to 1 and eliminate 2, and the amount of water added should not be too much.

6. ** Products and mother liquor.