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Grade 12th passPhysical Chemistry

how much 1.8 M H2SO4 AND H20 IS needed for 1000 grams of cuco3 to make cus04.5h20,and how much yeild can i get

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8 Years agoGrade 12th pass
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1 Answer

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ApprovedApproved Tutor Answer1 Year ago

To determine how much 1.8 M sulfuric acid (H2SO4) and water (H2O) is needed to react with 1000 grams of calcium carbonate (CaCO3) to produce copper(II) sulfate pentahydrate (CuSO4·5H2O), we first need to understand the chemical reactions involved and the stoichiometry of the process.

The Chemical Reaction

The reaction between calcium carbonate and sulfuric acid can be represented as follows:

  • CaCO3 + H2SO4 → CaSO4 + CO2 + H2O

In this reaction, calcium carbonate reacts with sulfuric acid to produce calcium sulfate, carbon dioxide, and water. However, to produce copper(II) sulfate pentahydrate, we need to consider the source of copper. Typically, copper(II) sulfate is produced from copper(II) oxide or copper(II) carbonate reacting with sulfuric acid:

  • CuO + H2SO4 → CuSO4 + H2O
  • CuCO3 + H2SO4 → CuSO4 + CO2 + H2O

For this example, let’s assume we are starting with copper(II) carbonate (CuCO3) instead of calcium carbonate (CaCO3) to produce copper(II) sulfate.

Calculating Moles of CuCO3

First, we need to calculate the number of moles of CuCO3 in 1000 grams:

  • Molar mass of CuCO3 = 63.55 (Cu) + 12.01 (C) + 3 × 16.00 (O) = 123.55 g/mol
  • Moles of CuCO3 = mass (g) / molar mass (g/mol) = 1000 g / 123.55 g/mol ≈ 8.09 moles

Determining H2SO4 Requirement

From the reaction, we see that 1 mole of CuCO3 reacts with 1 mole of H2SO4. Therefore, the moles of H2SO4 needed will also be approximately 8.09 moles.

Next, we calculate the volume of 1.8 M H2SO4 required:

  • Concentration (M) = moles/volume (L)
  • Volume (L) = moles / concentration = 8.09 moles / 1.8 M ≈ 4.49 L

Water Requirement

In the reaction, water is produced as a byproduct, but if we are looking to produce CuSO4·5H2O, we need to ensure we have enough water for the hydration. Each mole of CuSO4 requires 5 moles of water for the pentahydrate form:

  • Moles of water needed = 8.09 moles × 5 = 40.45 moles
  • Mass of water = moles × molar mass of water (18.02 g/mol) = 40.45 moles × 18.02 g/mol ≈ 729.5 g

Yield Calculation

Now, let’s calculate the theoretical yield of CuSO4·5H2O. The molar mass of CuSO4·5H2O is:

  • Molar mass of CuSO4·5H2O = 63.55 (Cu) + 32.07 (S) + 4 × 16.00 (O) + 5 × 18.02 (H2O) = 249.68 g/mol

Since we started with 8.09 moles of CuCO3, the theoretical yield of CuSO4·5H2O will be:

  • Theoretical yield = moles × molar mass = 8.09 moles × 249.68 g/mol ≈ 2025.5 g

Summary

To summarize:

  • You will need approximately 4.49 liters of 1.8 M H2SO4.
  • About 729.5 grams of water will be required for the hydration process.
  • The theoretical yield of CuSO4·5H2O from 1000 grams of CuCO3 is approximately 2025.5 grams.

Keep in mind that actual yields may vary due to factors such as incomplete reactions or losses during the process. Always conduct experiments with safety precautions in mind!