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18 October, 04:08

What is the mole fraction of hcl in a 4.50 m aqueous hcl solution?

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  1. 18 October, 05:43
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    0.075 is the mole fraction for HCl

    Explanation:

    Mole fraction = Moles of solute or solvent / Total moles

    Total moles = moles of solute + moles of solvent

    In this solution:

    HCl is the solute

    H₂O is the solvent

    4.50 m means molal, 4.50 moles of HCl in 1kg of water.

    Let's determine the moles of water

    1000 g. 1mol/18 g = 55.5 moles

    Total moles = 4.50 + 55.5 = 60.05 moles

    Mole fraction of HCl = 4.50 / 60.05 → 0.075
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