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K asked in Science & MathematicsChemistry · 1 decade ago

what is the freezing pt and boling point of a solution containing 1 mole of CaCl2 in 1.00 kg of water?

kb=0.52 C/mol kf=1.86 C/mol

help??

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  • Steve O
    Lv 7
    1 decade ago
    Favorite Answer

    1 mole of CaCl2 in 1.00 kg releases 3 moles of ions in 1.00 kg

    that's 3 molal

    dT = Kf (molality)

    dT = 1.86 (3)

    dT = 5.58

    your anser is

    - 5.58 Celsius

    but you might be expected to round off, based upon the number of sig figs in the "1 mole" given as data

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