Question

Олово можно получить в результате взаимодействия1)меди с оксидом олова2)водорода с гидроксидом олова3)магния с нитратом олова4)кислорода с хлоридом олова

Answer 1

3)магния с нитратом олова...................................

Answer 2

Obtaining Lead through Various Reactions

Lead can be obtained through the following reactions:

1) Reaction of copper with lead oxide: - When copper reacts with lead oxide, it forms copper oxide and lead. This is represented by the chemical equation: ``` 2Cu + PbO -> Cu2O + 2Pb ``` - This reaction is a type of displacement reaction where a more reactive metal displaces a less reactive metal from its compound.

2) Reaction of hydrogen with lead hydroxide: - When hydrogen reacts with lead hydroxide, it forms lead and water. The chemical equation for this reaction is: ``` Pb(OH)2 + H2 -> Pb + 2H2O ``` - This is a reduction-oxidation reaction, also known as a redox reaction, where the oxidation state of lead changes.

3) Reaction of magnesium with lead nitrate: - When magnesium reacts with lead nitrate, it forms magnesium nitrate and lead. The balanced chemical equation for this reaction is: ``` Mg + Pb(NO3)2 -> Mg(NO3)2 + Pb ``` - This is another example of a displacement reaction, where a more reactive metal displaces a less reactive metal from its compound.

4) Reaction of oxygen with lead chloride: - When oxygen reacts with lead chloride, it forms lead oxide and chlorine gas. The chemical equation for this reaction is: ``` 2PbCl2 + O2 -> 2PbO + 2Cl2 ``` - This reaction involves the oxidation of lead from a lower oxidation state to a higher oxidation state.

These reactions demonstrate different chemical processes through which lead can be obtained from various compounds.