Question

Закончите уравнения реакций, расставив коэффициенты методом электронно-ионного (или электронного) баланса: Fe(OH)2 + NaClO + H2O = Fe(OH)3 + NaCl Составьте уравнения реакций, расставив коэффициенты методом электронно-ионного (или электронного) баланса: Ag +HNO3(конц.)

Answer 1

Вроде, все понятно расписал.

Answer 2

Balancing the equation Fe(OH)2 + NaClO + H2O = Fe(OH)3 + NaCl

To balance the equation Fe(OH)2 + NaClO + H2O = Fe(OH)3 + NaCl using the method of electron-ion balance, we need to ensure that the number of atoms of each element is the same on both sides of the equation.

Let's break down the equation and balance it step by step:

1. Start by balancing the atoms other than hydrogen and oxygen. In this case, we have iron (Fe), sodium (Na), and chlorine (Cl).

Fe(OH)2 + NaClO + H2O = Fe(OH)3 + NaCl

The number of Fe atoms is already balanced on both sides.

The number of Na atoms is also balanced.

The number of Cl atoms is balanced, as there is one Cl atom on both sides.

2. Next, balance the oxygen atoms by adding water (H2O) molecules to the side that needs more oxygen. In this case, the left side needs more oxygen.

Fe(OH)2 + NaClO + H2O = Fe(OH)3 + NaCl

The left side has 2 oxygen atoms from Fe(OH)2 and 1 oxygen atom from NaClO, totaling 3 oxygen atoms.

To balance the oxygen atoms, we need to add 2 water molecules (H2O) to the left side:

Fe(OH)2 + NaClO + 2H2O = Fe(OH)3 + NaCl

3. Now, balance the hydrogen atoms. On the left side, we have 4 hydrogen atoms from 2 water molecules (2H2O). On the right side, we have 3 hydrogen atoms from Fe(OH)3.

To balance the hydrogen atoms, we need to add 1 hydrogen ion (H+) to the right side:

Fe(OH)2 + NaClO + 2H2O = Fe(OH)3 + NaCl + H+

4. Finally, balance the charges on both sides. On the left side, we have a net charge of 2+ from Fe(OH)2. On the right side, we have a net charge of 3+ from Fe(OH)3.

To balance the charges, we need to add 1 electron (e-) to the left side:

Fe(OH)2 + NaClO + 2H2O + e- = Fe(OH)3 + NaCl + H+

The balanced equation using the method of electron-ion balance is:

Fe(OH)2 + NaClO + 2H2O + e- = Fe(OH)3 + NaCl + H+