Question

Расставьте коэффициенты методом электронного баланса. Укажите восстановитель или окислитель PH3+Cl2+H2O=H3PO4+HCl

Answer 1

P-8-->P. PH3 восстановитель
Cl2+2-->2Cl. Cl2 окислитель

Answer 2

Balancing the Chemical Equation Using the Electron Balance Method

To balance the chemical equation PH3 + Cl2 + H2O = H3PO4 + HCl using the electron balance method, we need to follow these steps:

1. Write down the unbalanced equation. 2. Identify the oxidation states of each element. 3. Balance the atoms that are not hydrogen or oxygen. 4. Balance the oxygen atoms by adding water molecules. 5. Balance the hydrogen atoms by adding H+ ions. 6. Balance the charge by adding electrons. 7. Balance the charge by adding electrons. 8. Balance the charge by adding electrons.

Balancing the Equation Step by Step

1. Write down the unbalanced equation: The unbalanced equation is PH3 + Cl2 + H2O = H3PO4 + HCl.

2. Identify the oxidation states of each element: - Phosphorus (P) in PH3 has an oxidation state of -3. - Chlorine (Cl) in Cl2 has an oxidation state of 0. - Hydrogen (H) in H2O has an oxidation state of +1. - Oxygen (O) in H3PO4 has an oxidation state of -2. - Hydrogen (H) in HCl has an oxidation state of +1.

3. Balance the atoms that are not hydrogen or oxygen: The phosphorus and chlorine atoms are already balanced.

4. Balance the oxygen atoms by adding water molecules: There are 4 oxygen atoms on the right side of the equation (in H3PO4), and 1 oxygen atom on the left side (in H2O). We need to add 3 water molecules to balance the oxygen atoms.

5. Balance the hydrogen atoms by adding H+ ions: There are 3 hydrogen atoms on the right side of the equation (in H3PO4), and 3 hydrogen atoms on the left side (in H2O). The hydrogen atoms are already balanced.

6. Balance the charge by adding electrons: Since the equation is not balanced in terms of charge, we need to add electrons to balance the charges.

7. Balanced Equation: The balanced chemical equation using the electron balance method is: PH3 + Cl2 + 4H2O = H3PO4 + 3HCl

Conclusion

The balanced chemical equation using the electron balance method for the reaction PH3 + Cl2 + H2O = H3PO4 + HCl is PH3 + Cl2 + 4H2O = H3PO4 + 3HCl.