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March 30, 2017

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What is the freezing point of a solution made by dissolving 450 g of ethylene glycol (C2H6O2) in 550 g of water? The freezing point of pure water is 0.0ºC and Kf of pure water is -1.86ºC/m.

  • Chemistry - ,

    moles ethylene glycol = grams/molar mass.
    Solve for moles.

    m = moles solute/kg solvent
    Solve for m

    delta T = Kf*m
    solve for delta T, then for T.

  • Chemistry - ,

    -8.32

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