1. When making ice cream, the ingredients must be kept below 0.00 °C in an ice-salt bath. Assuming the salt dissolves completely, what mass, in g, of Na3PO4 would be needed to lower the melting point of 2.45 kg of ice to -5.06 °C? You may ignore ion pairing. MW of Na3PO4 = 163.94 g/mol Kf = 1.86 °C/m for water
1. When making ice cream, the ingredients must be kept below 0.00 °C in an ice-salt bath. Assuming the salt dissolves completely, what mass, in g, of Na3PO4 would be needed to lower the melting point of 2.45 kg of ice to -5.06 °C? You may ignore ion pairing. MW of Na3PO4 = 163.94 g/mol Kf = 1.86 °C/m for water
General Chemistry - Standalone book (MindTap Course List)
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ISBN:9781305580343
Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Publisher:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Chapter12: Solutions
Section: Chapter Questions
Problem 12.25QP: Consider two hypothetical pure substances, AB(s) and XY(s). When equal molar amounts of these...
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Transcribed Image Text:1. When making ice cream, the
ingredients must be kept below 0.00
°C in an ice-salt bath.
Assuming the salt dissolves
completely, what mass, in g, of
Na3PO4 would be needed to lower
the melting point of 2.45 kg of ice to
-5.06 °C? You may ignore ion pairing.
MW of Na3PO4 = 163.94 g/mol Kf =
1.86 °C/m for water
2. Alcoholic beverages are a mixture of
water, ethanol, and flavorings. Based
on what you have learned about
freezing point depression, describe
why placing an alcoholic beverage
such as Hennessy cognac (40%
ethanol, 80 proof) in the freezer will
not result in a solid, frozen product.
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