Advice 1: How to get copper chloride

Chloride of copper is a chemical compound that belongs to the group of salts. It is a soluble substance, which, depending on concentration has a different hue from a rich green to blue. In the laboratory during the practical work the chloride of copper (II) can be obtained using various methods.
How to get copper chloride
You will need
  • The reagents, the tubes
Someone may think that the easiest way to obtain a chloride of copper (II) is the interaction of the metal with hydrochloric acid. However, in practice this is not so, because there is a rule according to which with dilute acids react with metals standing in the electrochemical series of the stress of metals to hydrogen. Copper in this case, after hydrogen, and therefore the reaction is not.
Copper + chlorine = chloride of copper (II). In the interaction of metal copper with chlorine is formed only one substance is a chloride of copper (II), therefore, is the reaction of the compound. To experience rascality copper wire in the flame of a burner and put it in a container of chlorine, having at the bottom a small amount of water. A violent reaction occurs the formation of the salt, which is soluble in water.
Copper + soluble salt = other metal + other salt. This reaction is not with each soluble salt. Definitely need to focus on the electrochemical series of the stress of metals. Only those salts will go a reaction, which include metal, standing in row after copper. Such metals include mercury, silver and others. That is, in this case, is the rule in the electrochemical row of each previous metal displaces from the salt later.
Oxide copper + hydrochloric acid = chloride of copper (II)+ water. To produce the salt, take the vial, fill it one third of the hydrochloric acid, place the oxide of copper (II) (black powder) and heat on the flame of a spirit lamp. The reaction produced a green solution (in the case of concentrated salt) or blue.
Hydroxide copper (II) + hydrochloric acid = chloride of copper (II) + water. Otherwise, such chemical interaction is called a neutralization reaction. Hydroxide copper (II) represents a residue of blue color. To the freshly prepared substance (hydroxide copper (II)) add a little hydrochloric acid, and the precipitate dissolves, forming a solution of chloride of copper (II) blue colour.
Carbonate of copper (II) + hydrochloric acid = chloride of copper (II) + carbon dioxide + water. Take carbonate of copper, which is a white crystalline substance with a greenish tint, and Deposit a small amount into a test tube with hydrochloric acid. Will be boiling due to carbon dioxide, and the solution will become blue in color due to the formation of chloride of copper (II).
When performing experiments, be sure to observe the safety regulations.
Useful advice
Note the electrochemical series of the stress of metals.

Advice 2: How to obtain copper hydroxide

Copper hydroxide (II) – the substance is bright blue, not soluble in water. Has a crystalline or amorphous structure. It is a weak base used in the processing of agricultural plants, in textile and chemical industries. Cu(OH)co₂ get action on copper salts strong bases (alkalis).
How to obtain copper hydroxide
Obtaining of copper sulfate (II)

CuSO₄ - white crystalline powder, soluble in water. In the interaction with moist air or with water copper sulphate forms a crystalline (pentahydrate copper sulphate (II)), more commonly known as copper sulfate CuSO₄ • 5H₂O. Therefore, upon receipt of the hydroxide actually involved is not pure copper sulfate and its hydrated. Add to this solution an alkali (for example NaOH), and watch the reactions:

CuSO₄ + 5H₂O + 2NaOH = Na₂SO₄ + Cu(OH)co₂↓+5 H₂O.

When you add the proportionate amounts of reagent solution becomes colorless, and the copper hydroxide is precipitated in the form of a blue precipitate. Further, this solution may participate in the qualitative reactions on proteins.
Getting from copper nitrate (II)

Cu(NO₃)co₂ is a colourless crystalline substance. Enters into exchange reaction with strong bases. To carry out the reaction of obtaining the hydroxide salt can be added to the NaOH solution, colorless crystals of nitrate of copper (II). As a result, you will get a colorless solution of sodium nitrate and a precipitate of copper hydroxide (II) blue colour:

Cu(NO₃)co₂ + 2NaOH = Cu(OH)co₂↓ + 2NaNO₃.
Obtaining of copper chloride (II)

CuCl₂ - under normal conditions is a yellow powder or yellow-brown color. It is soluble in water. Pour in the vial of copper chloride and add an equivalent amount of alkali. Yellow crystals disappear and formed a blue precipitate. When you need to distinguish the substance from the solution, the precipitate filter and dry. Do not use vysokoenergeticheskie types of drying, because at temperature close to 100°C, Cu(OH)co₂ decomposes into copper oxide (II) and water:

CuCl₂ + 2NaOH = 2NaCl + Cu(OH)co₂↓.
Receiving from the acetate of copper (II)

(CH₃COO)₂Cu - substance, dark green color, soluble in water. When dissolved the solution becomes blue color. The calculated amount of alkali added to the solution of acetate of copper (II) and observe the formation of hydroxide (amorphous blue precipitate):

(CH₃COO)₂Cu + 2NaOH = Cu(OH)co₂↓+ CH₃COONa.

Since solutions of salts of copper (II) painted in blue or light blue color, the reaction is discoloration of the solution with subsequent precipitation of colored precipitate look very impressive.
COPPER HYDROXIDES . Copper hydroxide(II) si(OH) co₂ -blue crystal chandelier. or amorphous substance; the crystal chandelier. grille, rhombic. (a= 0,2949 nm, b =1,059 nm, C =0,5256 nm, z = 4); tight. 3,368 g/cm 3; C ⁰p 96,2 j/
Useful advice
Copper hydroxide(II) — Cu(Oh)2, blue amorphous or crystalline solid with a rhombic crystal lattice (a = 0,2949 nm, b = 1,059 nm, C = 0,5256 nm, z = 4). Cu(Oh)2 is almost insoluble in water.
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