Electrolytic refining with chalcopyrite yields copper with a purity of 99 9, right, why

No, the main component of chalcopyrite is a compound of copper, and refined copper is the elemental substance of chalcopyrite (cufes2) after smelting, blister copper, blister copper is the raw material for electrolytic refining, and electrolytic refining of blister copper is possible.

No, chalcopyrite is a compound of copper, and it is necessary to smelt chalcopyrite (cufes2) to obtain the elemental copper blister copper, and then electrolyze and refine blister copper.

No, the main selling state of chalcopyrite is a compound of copper, and refined copper is the elemental substance of chalcopyrite (cufes2) obtained after smelting, blister copper, blister copper is the raw material for electrolytic refining, and electrolytic refining of blister copper is possible.

The total reaction is 2CuSO4 + 2H2O = Cu + 2H2SO4 + O2, anode: 2H2O = O2 + 4H+-4E, and cathode: 2Cu2 + 4E = Cu.

Blister copper is used as the anode, pure copper is used as the cathode, and copper sulfate solution is used as the electrolyte. In blister copper, metals that are more active than copper are lost and electrons are dissolved, and metals that are less active than copper form anode mud and are deposited at the bottom of the electrolytic cell. The main application of the electrolytic cell is for the industrial production of high-purity metals, and is a device for converting electrical energy into chemical energy (composition:

external power supply, electrolyte solution, cathode and cation electrodes).

Electrolytic cell

The process of passing an electric current through an electrolyte solution or molten electrolyte to cause a reduction oxidation reaction on the cathode and anode is called electrolysis. A device that converts electrical energy into chemical energy is called an electrolytic cell or electrolyzer. When the ions reach the electrode, the electrons are lost or the cavity is gained, and the redox reaction takes place in the process of electrolysis.

Cathode: An electrode connected to the negative electrode of the power supply. (The electrons undergo a reduction reaction), anode:

An electrode connected to the positive terminal of a power supply. (Oxidation reaction occurs due to loss of electrons), energy conversion during electrolysis (device characteristics) The cathode must not participate in the reaction, and it is not necessarily an inert electrode; The anode is not necessarily involved in the reaction and is not necessarily an inert electrode.

The above content reference:Encyclopedia - Electrolytic cell

Both are the main methods for extracting metallic copper from solution, and the similarities between the two methods are:

1) Both are methods of extracting metallic copper from solution under the action of electrical energy, what occurs at the cathode is the reaction of Cu to obtain electrons to precipitate metallic copper Cu + 2e = Cu; 2) The structure of the electrolyzer, electrode connection, circuit system, electrolyte circulation system and production practices of the equipment used are basically the same. The differences are:

1) The anode material is different, the anode of electrolytic copper extraction is an anode plate cast after blowing and fire refining, and the main component is copper, while the electrowinning copper anode is an insoluble anode material, and the main component is a lead-based alloy material; 2) the reaction that occurs at the anode is different;

The main anodic reaction of electrolytic copper extraction is Cu - 2e = Cu; The main anode reaction of electrolytic copper extraction is: H2 O 2E = 1 2O2 + 2H.

3) Some important indicators in production practice are different, such as cell voltage (electrolysis, electrowinning power consumption (electrolysis 300 400 kva t, electrowinning 1700 2300 kva t), current efficiency (electrolysis more than 95%, electrowinning 77 92%), etc.

According to the law of conservation of mass, the mass that decreases before and after the reaction is the mass of the gas being generated.

So the mass of hydrogen produced is 20+

1.Electrolytic refining goes out of blister copper, which contains a small amount of zinc and silver. Zinc, which is a reactive metal, will first dissolve into the electrolyte at the anode, because the main component in the electrolyte is Cu2+, so Zn2+ will not be precipitated at the cathodic discharge.

AG, which is an inert component, does not react and turns into anode slurry. Therefore, electrolytic refining can remove zinc and silver.

2.Are nitrification and saponification reactions substitution reactions?

Yes, nitrification is the substitution of the hydrogen atom with the nitro group, and the saponification reaction is the substitution of the alkoxy group with the hydroxyl group.

The ability to obtain electrons from CNI, Fe and Zn is weaker than that of Cu, and these metal ions cannot become metals before copper electrons, so they will not become anode mud, but are stored in the electrolyte solution.

Only metals with stronger electronist ability than Cu, such as Ag, Au, etc., will form anode mud.

It's very simple, yes, you can't go wrong with choosing C.

a. When refining copper by electroplating, blister copper is the anode and refined copper is the cathode, and the salt Cuso4 solution containing copper ions can be selected as the electrolyte, so A is correct;

b. B is wrong if A, so B is wrong;

c. Because the copper ions in the solution precipitate at the cathode when the metal discharge of the anode is more active than copper during electrolysis, the concentration of Cu2+ in the solution becomes smaller after the electrolysis is over, so C is wrong;

d. Because the copper ions in the solution are precipitated at the cathode when the metal is discharged when the anode is more active than copper during electrolysis, the concentration of Cu2+ in the solution becomes smaller after the electrolysis is over, so D is wrong

So choose A

Electrolytic refining of blister copper.

Blister copper loses electrons electronically at the anode.

What happens is a redox reaction.

Refined copper is electron precipitated at the cathode 1 correct 2 correct.

Blister copper dissolves at the anodic.

The non-reactive *** is deposited at the bottom of the tank in the form of elemental substance, forming anode mud, but Fe is more active than Cu.

It loses electrons and is oxidized and is present in the electrolyte in an ionic state 3 incorrectly electrolytic copper in purity up to 4 correct.

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