Question

Используя метод электронного баланса,определить коэфициент в схеме химической реакции Mg+CO2-MgO+C

Answer 1

Mg+CO2------ > MgO+C

Отметим степени окисления:

$Mg^{0}$+ $C^{+4}O^{-2}2$ ----------> $Mg^{+2}O^{-2}$ + $C^{0}$

Распишем окислительно-восстановительные реакции и запишем коэффициенты:

$Mg^{0}$ - 2e ------------------> $Mg^{+2}$ | 4 | 2

Вос-тель        Окисление                   

$C^{+4}$ + 4e ------------------> $C^{0}$     | 2 |  1

Окис-тель   Восстановление                     

$O2^{-2}$ - 2e ------------------> $O^{-2}$   | 2 | 1

Вос-тель        Окисление

Теперь расставим коэффициенты и запишем уравнение реакции:

2Mg+CO2 = 2MgO+C

 

 

Answer 2

Решение во вложении:

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Answer 3

Using the Electronic Balance Method to Determine the Coefficient in the Chemical Reaction Mg + CO2 → MgO + C

To determine the coefficient in the chemical reaction Mg + CO2 → MgO + C using the electronic balance method, we can follow these steps:

1. Write the Balanced Chemical Equation: First, we need to write the balanced chemical equation for the reaction. The given reaction is: Mg + CO2 → MgO + C

2. Assign Variables to the Unknown Coefficients: Let's assign variables to the unknown coefficients in the chemical equation. We can represent the coefficients as follows: Mg + aCO2 → bMgO + cC

3. Apply the Electronic Balance Method: The electronic balance method involves balancing the number of atoms of each element on both sides of the chemical equation. This can be achieved by setting up a system of linear equations based on the conservation of mass.

4. Balancing the Equation: By applying the electronic balance method, we can balance the chemical equation by equating the number of atoms of each element on both sides of the equation.

- For Mg: The number of magnesium (Mg) atoms is balanced when a = b.

- For C: The number of carbon (C) atoms is balanced when a = c.

- For O: The number of oxygen (O) atoms is balanced when 2a = b.

5. Solving the System of Equations: We can solve the system of equations to find the values of the coefficients a, b, and c that satisfy all the conditions.

6. Determine the Coefficients: Once the system of equations is solved, the coefficients for the balanced chemical equation can be determined.

7. Final Balanced Chemical Equation: The final balanced chemical equation will have the coefficients for each compound that satisfy the conservation of mass.

Based on the given chemical reaction, Mg + CO2 → MgO + C, and the steps outlined above, the coefficients for the balanced chemical equation can be determined using the electronic balance method.

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