Question

C помощью метода электронного баланса расставьте коэффициенты в схеме химической реакции. укажите окислитель и восстановитель Ca3(PO4)2 + C + SiO2 = CaSiO3+ CO+ P

Answer 1

Ca3(PO4)2 + C + SiO2 = CaSiO3+ CO+ P

 

  2P(+5) + 10 e(-) = 2P(0)  | 10 | *1 | - P - окислитель, восстанавливается от (+5) до (0), "забирает" электроны

  C(0) - 2e(-) = C(+2)          |10 | *5 | - С - восстановитель, окисляясь от (0) до (+2), "отдает" электроны

 

Ca3(PO4)2 + 5C + 3SiO2 = 3CaSiO3+ 5CO+ 2P

 

Проверка по кислороду:

Слева кислорода: 4*2 + 3*2 = 14

Справа кислорода: 3*3 + 5 = 14

                                             - совпадает.

Следовательно, коэффициенты верны

Answer 2

Balancing the Chemical Equation using the Method of Electron Balance

To balance the chemical equation: Ca3(PO4)2 + C + SiO2 = CaSiO3 + CO + P, we will use the method of electron balance. This method involves balancing the number of atoms and charges on both sides of the equation.

Let's start by counting the number of atoms on each side of the equation:

On the left side: - Calcium (Ca): 3 atoms - Phosphorus (P): 2 atoms - Oxygen (O): 8 atoms - Carbon (C): 1 atom - Silicon (Si): 1 atom

On the right side: - Calcium (Ca): 1 atom - Silicon (Si): 1 atom - Oxygen (O): 4 atoms - Carbon (C): 1 atom - Phosphorus (P): 1 atom

We can see that the number of atoms is not balanced. To balance the equation, we will adjust the coefficients in front of each compound.

Balancing the Number of Atoms

1. Start by balancing the atoms that appear in the fewest compounds. In this case, it is Carbon (C). We have 1 C atom on both sides of the equation, so it is already balanced.

2. Next, balance the Phosphorus (P) atoms. We have 2 P atoms on the left side and 1 P atom on the right side. To balance the P atoms, we need to put a coefficient of 2 in front of the product CaSiO3 on the right side of