Cu is a reducing agent, AgCl is an oxidizing agent….Search by reactants (Cu, AgCl)

many metals react with acid and copper(II) chloride solutions. metalloids have properties of both metals and nonmetals.

Copper(II) chloride (CuCl2) reacts with several metals to produce copper metal or copper(I) chloride (CuCl) with oxidation of the other metal.

Copper is present below hydrogen in the reactivity series of metals. So it does not react with dilute acids like hydrochloric acid or sulfuric acid.

The copper loses oxygen. Hint: When copper is exposed to air it reacts and can form oxide as it is a reactive element. The black copper oxide is formed when copper metal is heated and made to react with oxygen. Then copper oxide reacts with the hydrogen gas and forms the copper metal and water.

In the reactivity series, copper is placed below hydrogen. Copper does not react with dilute sulphuric acid. This is because copper is lower in reactivity series than hydrogen. Copper has higher reduction potential than that of hydrogen.

Zinc reacts with hydrochloric acid to produce hydrogen gas because it’s more reactive than hydrogen, and thus displaces the latter from an acid. By comparison, copper cannot displace hydrogen from HCl because it’s less reactive than hydrogen. Zinc will reduce the hydrogen and get oxidized in the process.

Copper does not react with non-oxidising acids like hydrochloric acid or dilute sulfuric acid. As its electrode (reduction) potential is higher than that of hydrogen, pure copper cannot displace hydrogen from such acids.

Solution : In displacement reaction, more reactive metal displaces less reactive metal. Since, zinc is more reactive than hydrogen it displaces hydrogen in dilute hydrochloric acid and copper is less reactive than hydrogen and hence cannot displace hydrogen in dilute hydrochloric acid.

Answer. (a) When zinc metal is added to copper sulphate solution, the colour of CuSO4 solution disappears and colourless zinc sulphate solution is formed. Solid brown copper is deposited as it displaces by Zn.

Cu is less reactive than hydrogen so it won’t be able to replace from acids.

A more reactive metal will displace a less reactive metal from a solution. If a less reactive metal is added to a metal salt solution there will be no reaction.

gold and silver can be displaced by copper.

Because Fe,Zn,Mg are higher in the activity series than copper and a metal higher in the activity series displaces the lower ones solution and thus these would react with CuSO4 but Ag is lower in the series than Cu thus it cannot displace Cu from the salt.

Take copper sulphate solution in a test tube and place a silver few granule in it. After some time you observe that there is no change in the test tube, i.e., blue colour of copper sulphate does not fade away. This shows silver is less reactive than copper.

Answer: When a piece of magnesium is dipped into blue copper sulfate solution: the blue colour fades as colourless magnesium sulfate solution forms. brown copper coats the surface of the magnesium.

(a) Chemical reaction of iron nail with copper sulphate solution in water. Iron displaces copper ions from an aqueous solution of copper sulphate. Thus iron is more reactive than copper. In this reaction, metallic iron is converted into ferrous ion (Fe2+) and cupric ion (Cu2 +) is converted into metallic copper.

The overall reaction is: Mg(s) + CuSO4(aq) –> MgSO4(aq) + Cu(s); the magnesium, because it is more reactive than copper, displaces it. The blue solution will turn reddish black with the introduction of Mg.

The commonest reaction to discuss here is the one between magnesium and copper(II) oxide. You will remember that this is a violent reaction in which the magnesium takes the oxygen away from the copper.

Copper ions are positively charged. So they are attracted to the negative electrode. The negative electrode is called cathode.At the cathode, each copper ion gains two electrons. They are said to be reduced because reduction is the gain of electrons.

The colour of the copper sulfate does not change during the reaction with magnesium metal.

Copper corrodes by oxidation in which it reacts with oxygen in the air to form copper oxide. Copper oxide then combines with carbon dioxide to make copper carbonate, which gives it a green colour. This process is called corrosion of copper.

Whenever copper sulfate or CuSO4 is added to water, it gets dissolved in the water. As CuSO4 is an electrolyte, it splits into Cu+ + (cation) and SO4 − − (anion) ions and move freely in the solution. Now we will immerse two copper electrodes in that solution.

The anode (positive electrode ) is made from impure copper and the cathode (negative electrode) is made from pure copper. During electrolysis, the anode loses mass as copper dissolves, and the cathode gains mass as copper is deposited.

Impurities have to be removed. Copper is purified by electrolysis. In this process copper is transferred from an impure anode to the cathode of an electrolytic cell. The insoluble impurities fall to the bottom….

Most copper is used in electrical equipment such as wiring and motors. This is because it conducts both heat and electricity very well, and can be drawn into wires. It also has uses in construction (for example roofing and plumbing), and industrial machinery (such as heat exchangers).

Plants absorb metal ions through their roots in a process called Phytomining . It removes toxic metals from contaminated soil – around old mines for example. The ash would contain a higher concentration of metal than the soil. Phytomining is used to extract copper from soil containing its ore.