Question

решите цепочкИ... 1)FeCl2 - X - FeSO4 - Fe 2)Cu - x - Cu(NO3)2 - Cu(OH)2

Answer 1

1)FeCl2 +Al = AlCl3 + Fe

Fe + H2SO4(разб) -------> FeSO4 +h2

FeSO4+ Zn= Fe + ZnSO4

2) Сu + O2 = CuO

CuO + 2HNO3 ----> Cu(NO3)2 +H2O

Cu(NO3)2 + 2NaOH ---->Cu(OH)2 + 2NaNO3

 

 

 

 

 

 

 

 

 

 

 

Answer 2

Chain 1: FeCl2 - X - FeSO4 - Fe

The given chain is: FeCl2 - X - FeSO4 - Fe.

To determine the missing compound X, we need to understand the reaction between FeCl2 and FeSO4.

The reaction between FeCl2 and FeSO4 can be represented as follows: FeCl2 + FeSO4 -> Fe + X

To find the missing compound X, we need to balance the equation and determine the stoichiometric coefficients.

According to the law of conservation of mass, the number of atoms of each element must be the same on both sides of the equation.

Let's balance the equation step by step:

1. Balance the iron (Fe) atoms: There is one iron atom on the left side and one on the right side, so the iron atoms are already balanced.

2. Balance the chlorine (Cl) atoms: There are two chlorine atoms on the left side (FeCl2) and none on the right side (Fe). To balance the chlorine atoms, we need to add two chloride ions (Cl-) to the right side of the equation: FeCl2 + FeSO4 -> Fe + 2Cl- + X

3. Balance the sulfur (S) atoms: There is one sulfur atom on the left side (FeSO4) and none on the right side (Fe). To balance the sulfur atom, we need to add one sulfate ion (SO4^2-) to the right side of the equation: FeCl2 + FeSO4 -> Fe + 2Cl- + SO4^2- + X

Now the equation is balanced, and the missing compound X is the sulfate ion (SO4^2-).

Therefore, the complete chain is: FeCl2 - 2Cl- - FeSO4 - Fe

Chain 2: Cu - X - Cu(NO3)2 - Cu(OH)2

The given chain is: Cu - X - Cu(NO3)2 - Cu(OH)2.

To determine the missing compound X, we need to understand the reaction between Cu and Cu(NO3)2.

The reaction between Cu and Cu(NO3)2 can be represented as follows: Cu + Cu(NO3)2 -> X + Cu(OH)2

To find the missing compound X, we need to balance the equation and determine the stoichiometric coefficients.

Let's balance the equation step by step:

1. Balance the copper (Cu) atoms: There is one copper atom on the left side and one on the right side, so the copper atoms are already balanced.

2. Balance the nitrogen (N) atoms: There are two nitrogen atoms in Cu(NO3)2 and none on the right side. To balance the nitrogen atoms, we need to add two nitrate ions (NO3-) to the right side of the equation: Cu + Cu(NO3)2 -> X + 2NO3- + Cu(OH)2

3. Balance the oxygen (O) atoms: There are six oxygen atoms in Cu(NO3)2 and two in Cu(OH)2. To balance the oxygen atoms, we need to add four hydroxide ions (OH-) to the right side of the equation: Cu + Cu(NO3)2 -> X + 2NO3- + 4OH- + Cu(OH)2

Now the equation is balanced, and the missing compound X is water (H2O).

Therefore, the complete chain is: Cu - X - Cu(NO3)2 - Cu(OH)2

Please note that the balanced equations provided here are based on the given compounds and their reactions. If there are additional conditions or specific reactions mentioned, the equations may vary accordingly.