The freezing point of a liquid will change when a solute is added. Explain how the addition of salt impacts the boiling point of water. Calculate the
The freezing point of a liquid will change when a solute is added. Explain how the addition of salt impacts the boiling point of water. Calculate the
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Transcribed Image Text:The freezing point of a liquid will change when a solute is added. Explain
how the addition of salt impacts the boiling point of water. Calculate the
freezing point change for a given concentration.
a) What is the strongest intermolecular force between two molecules of water in
ice?
b) When an electrolyte solution (such as NaCI) is added to ice, the ions have
the ability of the water
with water molecules and thus
molecules to form a solid ice structure.
c) Given that water's freezing point is 0.00°C and the freezing point depression
constant (Kf) is 1.86 °C-kg/mol, calculate the freezing point depression for a
4.15 molal solution (moles/kg) of NaCl in water. Assume ideal behavior of the
ions.
d) CaCl2 is often used to melt ice on sidewalks. Calcium chloride is more
effective at melting ice than NaCl. Choose the best explanation for this
observation.
e) Given that water's freezing point is 0.00°C and the freezing point depression
constant (Kf) is 1.86 °C kg/mol, calculate the freezing point depression for a
4.15 molal solution (moles/kg) of CaCl2 in water. Assume ideal behavior of
the ions.
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