Question

Сколько серной кислоты может быть теоретически получено из 39,96 тонн пирита?

Answer 1

Ответ:

Стадии процесса:

4FeS₂ + 11O₂ = 2Fe₂O₃ + 8SO₂

8SO₂ + 4O₂ + 8SO₃

8SO₃ + 8H₂O = 8H₂SO₄

Cуммарное уравнение:

4FeS₂ + 15O₂ + 8H₂O = 2Fe₂O₃ + 8H₂SO₄

отношение n(FeS₂) : n(H₂SO₄) = 4 : 8 = 1 : 2

n(FeS₂) = m/M = 39,96*10⁶ г/120г/моль = 0,333*10⁶ моль

По суммарному уравнению: n(H₂SO₄) = 2*n(FeS₂) = 0,666*10⁶ моль

m(H₂SO₄) = n*M = 0,666*10⁶ моль * 98г/моль = 65,268*10⁶ г

Округляем до тонн

m(H₂SO₄) = 65,27 тонн

Объяснение:

Answer 2

Calculating the Amount of Sulfuric Acid Produced from Pyrite

To calculate the amount of sulfuric acid that can be theoretically obtained from 39.96 tons of pyrite, we can use the following chemical equation for the reaction:

FeS2 + 7O2 + 2H2O → Fe2(SO4)3 + 2H2SO4

From the balanced chemical equation, we can see that 1 mole of pyrite (FeS2) produces 2 moles of sulfuric acid (H2SO4). The molar mass of pyrite (FeS2) is approximately 119.98 g/mol, and the molar mass of sulfuric acid (H2SO4) is approximately 98.08 g/mol.

Calculation:

1. Convert the given mass of pyrite to moles: - 39.96 tons = 39.96 × 1000 kg = 39,960 kg - Molar mass of pyrite (FeS2) = 119.98 g/mol - Moles of pyrite = (39,960,000 g) / (119.98 g/mol) = 333,050.04 moles

2. Calculate the moles of sulfuric acid produced: - From the balanced chemical equation, 1 mole of pyrite produces 2 moles of sulfuric acid. - Moles of sulfuric acid = 2 × 333,050.04 = 666,100.08 moles

3. Convert moles of sulfuric acid to mass: - Molar mass of sulfuric acid (H2SO4) = 98.08 g/mol - Mass of sulfuric acid = 666,100.08 moles × 98.08 g/mol = 65,308,568.07 g

Answer:

Theoretically, approximately 65,308,568.07 grams or 65,308.57 metric tons of sulfuric acid can be obtained from 39.96 tons of pyrite.

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