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March 27, 2017

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Calculate the freezing point and boiling point of a solution that contains 57.0 g NaCl and 53.4 g KBr dissolved in 750.3 mL H2O

  • chem - ,

    moles NaCl = grams/molar mass = ??
    moles KBr = grams/molar mass = ??
    Add moles NaCl + moles KBr.
    molality = total moles/kg solvent
    delta T = i*Kf*molality
    i = 2

    delta T = i*Kb*molality
    i = 2

  • chem - ,

    thanks

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