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  • Barium Sulfate Production: Stoichiometry and Calculation
    Here's how to solve this problem step-by-step:

    1. Write the balanced chemical equation:

    BaCl₂(aq) + Na₂SO₄(aq) → BaSO₄(s) + 2NaCl(aq)

    2. Calculate the moles of each reactant:

    * Moles of BaCl₂:

    (22.6 mL) * (1 L / 1000 mL) * (0.160 mol/L) = 0.00362 mol BaCl₂

    * Moles of Na₂SO₄:

    (54.6 mL) * (1 L / 1000 mL) * (0.055 mol/L) = 0.00300 mol Na₂SO₄

    3. Determine the limiting reactant:

    * The balanced equation shows a 1:1 mole ratio between BaCl₂ and Na₂SO₄.

    * Since we have fewer moles of Na₂SO₄ (0.00300 mol) than BaCl₂ (0.00362 mol), Na₂SO₄ is the limiting reactant. This means it will be completely consumed, and the amount of BaSO₄ formed will be determined by the amount of Na₂SO₄.

    4. Calculate the moles of BaSO₄ formed:

    * The 1:1 mole ratio from the balanced equation tells us that 0.00300 mol of Na₂SO₄ will produce 0.00300 mol of BaSO₄.

    5. Convert moles of BaSO₄ to grams:

    * Molar mass of BaSO₄ = 137.33 g/mol + 32.06 g/mol + (4 * 16.00 g/mol) = 233.39 g/mol

    * Mass of BaSO₄ = (0.00300 mol) * (233.39 g/mol) = 0.700 g

    Therefore, 0.700 grams of solid barium sulfate will form.

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