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20 March, 17:09

The reaction of hydrogen gas and iron oxide is described by the chemical equation below. 3H2+Fe2O3→2Fe+3H2O How many moles of iron will be produced if 3.3mol of hydrogen gas reacts with 1.5mol of iron oxide?

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  1. 20 March, 17:32
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    2.2 moles of Fe will be produced

    Explanation:

    Step 1: Data given

    Number of moles of hydrogen gas = 3.3 moles

    Number of moles of iron oxide = 1.5 moles

    Step 2: The balanced equation

    3H2 + Fe2O3 → 2Fe + 3H2O

    Step 3: Calculate the limiting reactant

    For 3 moles H2 we need 1 mol Fe2O3 to produce 2 moles Fe and 3 moles H2O

    Hydrogen gas is the limiting reactant. It will completely be consumed (3.3 moles). Fe2O3 is in excess. There will react 3.3 / 3 = 1.1 moles

    There will remain 1.5 - 1.1 = 0.4 moles Fe2O3

    Step 4: Calculate moles Fe

    For 3 moles H2 we need 1 mol Fe2O3 to produce 2 moles Fe and 3 moles H2O

    For 3.3 moles H2 we'll have 2/3 * 3.3 = 2.2 moles Fe

    2.2 moles of Fe will be produced
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