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9 November, 04:17

What is the limiting reagent when 3.1 mol of SO2 react with 2.7 mol of O2

according to the equation: 2SO2 (g) + O2 (g) - -> 2SO3 (g)

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  1. 9 November, 07:34
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    The number of moles of SO₃ produced by SO₂ are less so it is limiting reactant.

    Explanation:

    Given dа ta:

    Number of moles of SO₂ = 3.1 mol

    Number of moles of O₂ = 2.7 mol

    Limiting reactant = ?

    Solution:

    Chemical equation;

    2SO₂ + O₂ → 2SO₃

    Now we will compare the moles of SO₃ with O₂ and SO₂.

    SO₂ : SO₃

    2 : 2

    3.1 : 3.1

    O₂ : SO₃

    1 : 2

    2.7 : 2*2.7 = 5.4 mol

    The number of moles of SO₃ produced by SO₂ are less so it is limiting reactant.
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