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chem - freezing point

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When 18 g of ethylene glycol C2H6O2 is dissolved in 150 g of pure water, the freezing point of the solution is

_____ C. (The freezing point depression constant for water is 186C kgmol.

  • chem - freezing point -

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

    molality = mols/kg solvent
    solve for molality

    delta T = Kf*m
    solve for delta T

    Subtract delta T from zero C to obtain the freezing point.

  • chem - freezing point -

    b. What is the freezing point depression when 153 g of bromine is added to 100 g of benzene?

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