Question

Підберіть коефіцієнти методом електронного балансу. Зазначте окисник і відповідник : Pb+NaNO3 - NaNO2+PbO

Answer 1

Відповідь:

Pb+NaNO3 - NaNO2+PbO

Pb⁰-2e=Pb⁺²║1║відновник

N⁺⁵+2e=N⁺³║1║окисник

Пояснення:

Answer 2

Method of Electron Balance and Balancing the Equation: Pb + NaNO3 -> NaNO2 + PbO

To balance the given chemical equation using the method of electron balance, we need to ensure that the number of atoms of each element is the same on both sides of the equation. Here's how we can balance the equation:

1. Start by counting the number of atoms of each element on both sides of the equation:

Left side (reactants): - Pb: 1 atom - Na: 1 atom - N: 1 atom - O: 3 atoms

Right side (products): - Na: 1 atom - N: 1 atom - O: 3 atoms - Pb: 1 atom

2. Balance the atoms of each element one by one, starting with the most complex molecule. In this case, we'll start with NaNO3.

Balancing the nitrogen (N) atoms: - There is 1 N atom on both sides of the equation, so nitrogen is already balanced.

Balancing the oxygen (O) atoms: - There are 3 O atoms on both sides of the equation, so oxygen is already balanced.

Balancing the sodium (Na) atoms: - There is 1 Na atom on both sides of the equation, so sodium is already balanced.

Balancing the lead (Pb) atoms: - There is 1 Pb atom on both sides of the equation, so lead is already balanced.

3. The equation is already balanced, and the coefficients are as follows:

Pb + NaNO3 -> NaNO2 + PbO

Therefore, the coefficients for the balanced equation are: - Pb: 1 - NaNO3: 1 - NaNO2: 1 - PbO: 1

The balanced equation is: Pb + NaNO3 -> NaNO2 + PbO.

Please note that the coefficients obtained through the method of electron balance are the simplest whole number ratios that balance the equation.