Question

Расставьте коэффициенты методом электронного баланса,укажите окислитель и восстановитель : H2SO4+Zn->ZnSO4+H20+SO2Напишите молекулярные уравнения реакций,с помощью которых можно осуществить следующие превращения: NH4CL-?NH3->N2->No->NO2

Answer 1

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Answer 2

Balancing the Equation: H2SO4 + Zn -> ZnSO4 + H2O + SO2

To balance the equation using the method of electronic balancing, we need to ensure that the number of atoms of each element is the same on both sides of the equation.

The unbalanced equation is: H2SO4 + Zn -> ZnSO4 + H2O + SO2

To balance it, we can follow these steps:

Step 1: Balance the atoms other than hydrogen and oxygen. - The sulfur (S) atoms are already balanced on both sides. - The zinc (Zn) atoms are also balanced.

Step 2: Balance the hydrogen (H) atoms. - There are 2 hydrogen atoms on the left side (in H2SO4) and 2 hydrogen atoms on the right side (in H2O). - The hydrogen atoms are already balanced.

Step 3: Balance the oxygen (O) atoms. - There are 4 oxygen atoms on the left side (in H2SO4) and 5 oxygen atoms on the right side (in ZnSO4 and H2O). - To balance the oxygen atoms, we need to add one more oxygen atom on the left side. - We can do this by adding a coefficient of 2 in front of H2SO4.

The balanced equation is: 2H2SO4 + Zn -> ZnSO4 + H2O + SO2.

In this reaction, H2SO4 is the oxidizing agent (oxidant) because it causes the zinc (Zn) to lose electrons and get oxidized to ZnSO4. On the other hand, Zn is the reducing agent (reductant) because it causes the hydrogen ions (H+) in H2SO4 to gain electrons and get reduced to H2 gas.

Molecular Equations for the Given Transformations: NH4Cl -> NH3 -> N2 -> NO -> NO2

To achieve the given transformations, we can use a series of reactions. Here are the molecular equations for each step:

1. NH4Cl -> NH3 - The reaction equation is: NH4Cl -> NH3 + HCl.

2. NH3 -> N2 - The reaction equation is: 4NH3 + 3O2 -> 2N2 + 6H2O.

3. N2 -> NO - The reaction equation is: N2 + O2 -> 2NO.

4. NO -> NO2 - The reaction equation is: 2NO + O2 -> 2NO2.

Please note that these reactions are just examples of how the given transformations can be achieved. There may be alternative reactions or conditions that can also lead to the desired transformations.

I hope this helps! Let me know if you have any further questions.