Question

При разложении 200 кг карбоната кальция образовалось 100кг оксида кальция определите выход продукта

Answer 1

200000г    Хг
СаСO₃ ⇒ CaO + CO₂
100г/моль 56г/моль
составляем пропорцию: 200 000/100 = Х/56 ⇒
Х = 200 000*56/100 = 112000 г = 112 кг
ω (вых) = m практ./m теор. = 100 кг/112 кг = 0,89 или 89%

Answer 2

Calculating the Yield of the Product

To calculate the yield of the product, we can use the formula for the percentage yield:

Percentage Yield = (Actual Yield / Theoretical Yield) x 100%

Given: - Mass of calcium carbonate (CaCO3) = 200 kg - Mass of calcium oxide (CaO) formed = 100 kg

Using the formula, we can calculate the percentage yield of the product.

Theoretical Yield: The theoretical yield of calcium oxide (CaO) can be calculated from the balanced chemical equation for the decomposition of calcium carbonate:

CaCO3(s) → CaO(s) + CO2(g)

From the equation, we can see that 1 mole of calcium carbonate produces 1 mole of calcium oxide. The molar mass of CaCO3 is 100.09 g/mol, and the molar mass of CaO is 56.08 g/mol.

Let's calculate the theoretical yield of calcium oxide (CaO) from 200 kg of calcium carbonate.

Actual Yield: The actual yield of calcium oxide (CaO) is given as 100 kg.

Now, let's calculate the percentage yield using the given values.

Percentage Yield: Percentage Yield = (Actual Yield / Theoretical Yield) x 100%

Calculation: Theoretical Yield of CaO = (Mass of CaCO3 / Molar mass of CaCO3) * Molar mass of CaO Theoretical Yield of CaO = (200,000 g / 100.09 g/mol) * 56.08 g/mol Theoretical Yield of CaO ≈ 112,000 g ≈ 112 kg

Percentage Yield = (100 kg / 112 kg) x 100% Percentage Yield ≈ 89.29%

Conclusion: The percentage yield of the product (calcium oxide) is approximately 89.29%.