Question

1)осуществите превращения S-->FeS-->H2S-->Cus-->SO22)хватит ли 2 л кислорода (н.у) для полного строения 4 г серы? Ответ подтвердите расчетами

Answer 1

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Answer 2

Transformation of S to SO2

The transformation of S to SO2 involves several steps. Let's break it down:

1. S to FeS: Sulfur (S) can react with iron (Fe) to form iron sulfide (FeS). This reaction can be represented by the equation: S + Fe → FeS.

2. FeS to H2S: Iron sulfide (FeS) can react with an acid to produce hydrogen sulfide (H2S). This reaction can be represented by the equation: FeS + 2HCl → H2S + FeCl2.

3. H2S to CuS: Hydrogen sulfide (H2S) can react with copper (Cu) to form copper sulfide (CuS). This reaction can be represented by the equation: H2S + Cu → CuS + H2.

4. CuS to SO2: Copper sulfide (CuS) can react with oxygen (O2) to produce sulfur dioxide (SO2). This reaction can be represented by the equation: 2CuS + 3O2 → 2CuO + 2SO2.

Calculation of Oxygen Requirement

To determine if 2 liters of oxygen (at standard temperature and pressure) would be sufficient for the complete conversion of 4 grams of sulfur (S) to sulfur dioxide (SO2), we need to calculate the stoichiometric ratio between sulfur and oxygen in the reaction.

The balanced equation for the reaction between sulfur and oxygen is:

S + O2 → SO2

From the equation, we can see that 1 mole of sulfur reacts with 1 mole of oxygen to produce 1 mole of sulfur dioxide.

The molar mass of sulfur (S) is approximately 32.06 g/mol, and the molar mass of oxygen (O2) is approximately 32.00 g/mol.

To calculate the amount of oxygen required to react with 4 grams of sulfur, we can use the following steps:

1. Calculate the number of moles of sulfur: - Number of moles = mass / molar mass - Number of moles of sulfur = 4 g / 32.06 g/mol ≈ 0.1247 mol

2. Since the stoichiometric ratio between sulfur and oxygen is 1:1, the number of moles of oxygen required will be the same as the number of moles of sulfur.

3. Calculate the volume of oxygen at standard temperature and pressure (STP): - 1 mole of any gas occupies 22.4 liters at STP. - Volume of oxygen required = number of moles of oxygen × 22.4 L/mol - Volume of oxygen required = 0.1247 mol × 22.4 L/mol ≈ 2.79 L

Therefore, approximately 2.79 liters of oxygen (at STP) would be required for the complete conversion of 4 grams of sulfur to sulfur dioxide.

Please note that this calculation assumes ideal conditions and does not account for any side reactions or losses during the process.

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