Please solve When making ice cream, the ingredients must be kept below 0.00 °C in an ice-salt bath. Assuming the saltdissolves completely, what mass, in g, of NazPO4 Would be needed to lower the melting point of 1.51 kg ofice to -4.12 °C? You may ignore ion pairing.MW of Na3PO4 = 163.94 g/molKf = 1.86 °C/m for water

Melting Point and Freezing point of ice/water occurs at almost the same temperatures. So The…

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 NagPO4 Would be needed to lower the melting point of 1.51 kg of ice to -4.12 °C? You may ignore ion pairing. MW of Na3PO4 = 163.94 g/mol K = 1.86 °C/m for water

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 NagPO4 Would be needed to lower the melting point of 1.51 kg of ice to -4.12 °C? You may ignore ion pairing. MW of Na3PO4 = 163.94 g/mol K = 1.86 °C/m for water

Chemistry: The Molecular Science

5th Edition

ISBN:9781285199047

Author:John W. Moore, Conrad L. Stanitski

Publisher:John W. Moore, Conrad L. Stanitski

Chapter13: The Chemistry Of Solutes And Solutions

Section: Chapter Questions

Problem 111QRT: The organic salt [(C4H9)4N][ClO4] consists of the ions (C4H9)4N+ and ClO4. The salt dissolves in...

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Sodium chloride (NaCl) is commonly used to melt ice on roads during the winter. Calcium chloride (CaCl2) is sometimes used for this purpose too. Let us compare the effectiveness of equal masses of these two compounds in lowering the freezing point of water, by calculating the freezing point depression of solutions containing 200. g of each salt in 1.00 kg of water. (An advantage of CaCl2 is that it acts more quickly because it is hygroscopic, that is. it absorbs moisture from the air to give a solution and begin the process. A disadvantage is that this compound is more costly.)
(a) Which aqueous solution is expected to have the higher boiling point: 0.10 m Na2SO4 or 0.15 m sugar? (b) For which aqueous solution is the vapor pressure of water higher: 0.30 m NH4NO3 or 0.15 m Na2SO4?
The organic salt [(C4H9)4N][ClO4] consists of the ions (C4H9)4N+ and ClO4. The salt dissolves in chloroform. What mass (in grams) of the salt must have been dissolved if the boiling point of a solution of the salt in 25.0 g chloroform is 63.20 C? The normal boiling point of chloroform is 61.70 C and Kb = 3.63 C kg mol1. Assume that the salt dissociates completely into its ions in solution.
Pure iodine (105 g) is dissolved in 325 g of CCl4 at 65 C. Given that the vapor pressure of CCl4 at this temperature is 531 mm Hg, what is the vapor pressure of the CCl4-I2 solution at 65 C? (Assume that I2 does not contribute to the vapor pressure.)
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