Question

Складіть рівняння реакцій за наведеною схемою FeS2+O2→Fe2O3+SO2. укажіть суму всіх коефіцієнтів ​

Answer 1

Ответ:фото

Объяснение:

указано все в фото, смотри

Answer 2

Balancing the Chemical Equation

The given chemical equation is:

FeS2 + O2 → Fe2O3 + SO2

To balance this equation, we need to ensure that the number of atoms of each element is the same on both sides of the equation.

Let's start by balancing the sulfur (S) atoms. There are 2 sulfur atoms on the left side and 1 sulfur atom on the right side. To balance the sulfur atoms, we need to put a coefficient of 2 in front of SO2 on the right side:

FeS2 + O2 → Fe2O3 + 2SO2

Next, let's balance the oxygen (O) atoms. There are 2 oxygen atoms in FeS2 and 2 oxygen atoms in O2 on the left side, giving us a total of 4 oxygen atoms. On the right side, there are 3 oxygen atoms in Fe2O3 and 4 oxygen atoms in 2SO2, giving us a total of 7 oxygen atoms. To balance the oxygen atoms, we need to put a coefficient of 7/2 or 3.5 in front of O2 on the left side. However, we cannot have fractional coefficients in a balanced chemical equation. To eliminate the fractional coefficient, we can multiply the entire equation by 2:

2FeS2 + 7O2 → 2Fe2O3 + 4SO2

Now, let's check if the equation is balanced.

- Iron (Fe) atoms: There are 2 Fe atoms on both sides. - Sulfur (S) atoms: There are 4 S atoms on both sides. - Oxygen (O) atoms: There are 14 O atoms on both sides.

Therefore, the balanced equation is:

2FeS2 + 7O2 → 2Fe2O3 + 4SO2

The sum of all the coefficients in the balanced equation is 2 + 7 + 2 + 4 = 15.