Regarding copper sulphate, the properties of copper sulphate

Copper is less chemically present than hydrogen"This statement itself is wrong, in fact, it should be a post-hydrogen metal in the order of metal activity. However, salts do not have to be produced by the displacement of metals and acids, but can also be prepared by other methods, such as heating copper and concentrated sulfuric acid.

In the order of metal activity, copper is behind hydrogen, which indicates their ability to lose electrons h>cu, the order of metal activity is generally used to judge the liveliness and whether it can be replaced, generally speaking, the metal in front can replace the metal behind (the replacement of active metals such as potassium, sodium and calcium must be in a molten state, otherwise it reacts with water to replace hydrogen), copper is behind hydrogen, indicating that copper cannot replace hydrogen.

This is illustrated by the fact that Cu + 2H2SO4 (concentrated) = CuSo4 + 2So2 + 2H2O does not produce hydrogen.

There are other ways to prepare it, first heat copper in oxygen or air to produce copper oxide, and then Cuo H2SO4 = CuSO4 + H2O

Taibai is right.

Concentrated sulfuric acid has super oxidizing properties, and can react with some uncomfortable and very active metals to release sulfur dioxide, Cu + 2H2SO4 (concentrated) = CuSO4 + 2SO2 + 2H2O

And in contact with iron and aluminum (cold), a passivation reaction can occur (aluminum tanker principle) In addition, such a reaction also occurs with concentrated nitric acid, and concentrated hydrochloric acid is gone.

Copper sulphate is not made directly from copper and sulphuric acid.

It is made in other forms of copper with sulfuric acid.

For example: cuo+h2so4=cuso4+h20 and so on.

Copper and concentrated sulfuric acid produce copper sulfate.

Cu + 2H2SO4 (concentrated) = CuSo4 + 2SO2 + 2H2O

Concentrated sulfuric acid has strong oxidizing properties.

It can be replaced with other metals that are less active than copper.

Wouldn't it be okay to oxidize it and then react with acid?

Blue transparent crystal, soluble in water, slightly soluble in dilute ethanol but insoluble in anhydrous ethanol, anhydrous copper sulfate is gray-white powder, easy to absorb water and turn blue-green copper sulfate pentahydrate, copper sulfate has no melting point under normal pressure, decomposes after losing crystal water after heating, is very stable at room temperature and pressure, does not deliquescent, and will gradually weathered in dry air. Copper sulfate is a crystallization of the blue asymmetric triclinic crystal system, with a specific gravity. It is chemically stable at room temperature, easily soluble in water, and can be dissolved in 15% water, and its aqueous solution is blue and acidic.

If left in the air for a long time, it will gradually lose its crystalline water and turn white.

It is a strong acid and weak alkali salt, due to the fact that the hydrolyzed solution is weakly acidic. It is very absorbent, and after absorbing water, it reacts to form blue copper sulfate pentahydrate, commonly known as bile alum or blue alum, and the aqueous solution is blue. The copper sulfate solution is concentrated and crystallized to obtain copper sulfate blue crystals of pentahydrate, commonly known as bile alum, copper alum or blue alum.

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Problem description: such as solubility, hardness, density, melting point, boiling point, etc.

Analysis: Chinese name】Copper sulfate; cholelum; Blue alum.

Product Name】Cupric sulfate; copper sulfate;bule vitriol;roman vitriol

relative molecular weight or atomic weight].

Density] five water), no water).

Melting point ( ) 200 (anhydrous).

Toxicity: LD50 (mg kg).

Rats are 330 orally, which is relatively safe for humans and animals, and will not be poisoned by contact, but will produce acute poisoning after ingestion. Carp tlm (48h) is, loach is.

Properties] pentahydrate: blue triclinic crystal, anhydrous: green-white powder.

Solubility] soluble in water and ammonia.

Uses] used as textile mordant, agricultural insecticide, water fungicide, feed additive, and used for copper plating.

Ketone sulfate aqueous solution has a strong bactericidal effect, which is mainly used in agriculture to prevent and control fruit trees, malt, potatoes, rice and other diseases, with good effect, but has a poor effect on rust and powdery mildew. At the same time, it is harmful to plants, and it is only used on crops with strong tolerance to copper ion pesticides or fruit trees in the dormant period. It is a prophylactic antiseptic and needs to be used before the onset of illness.

It can also be used for algae removal in paddy fields and ponds. It is also a trace element fertilizer, which can improve the stability of chlorophyll, prevent chlorophyll from being destroyed prematurely, and promote crop absorption.

Preparation or **].

It is prepared by the reaction of copper and copper oxide with dilute sulfuric acid, concentrated crystallization.

Other] Heat to 110 to lose four-molecule crystal water, 250 to lose all crystal water. 650 decomposes into copper oxide and sulfur trioxide.

A solution is used for soaking cereals. Copper sulfate solution is used for topdressing outside the root, and grams of copper sulfate are used per kilogram of corn dressing, if used as base fertilizer, it is used per mu and applied every 3 5 years.

Packaging, storage and transportation].

Packed in woven bags lined with plastic bags. During storage and transportation, it is strictly protected from moisture and sunlight, and cannot be exposed to rain, and must not be mixed with food, seeds and feed.

Production unit] Shenyang Pesticide Factory; Liaoning Wafangdian Chemical Plant; Sichuan Guanghan Chemical General Plant Inorganic Branch; Hebei Xinji City Chemical Plant No. 3, etc.; Hunan Reagent Factory; Guangxi Research Institute of Chemical Industry; Beijing Chemical Plant; Guangzhou Chemical Reagent Factory; Zibo feed additives factory, etc.