Answered: What mass, in g, of Na3PO4 would be…

What mass, in g, of Na3PO4 would be needed to lower the melting point of 3.4 kg of ice to -4.83 ˚C? Ignore ion pairing. MW of Na3PO4 = 163.94 g/mol Kf = 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

Chapter9: Liquids, Solids, And Materials

Section9.4: Solids And Changes Of Phase

Problem 9.5E

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Question

What mass, in g, of Na₃PO₄ would be needed to lower the melting point of 3.4 kg of ice to -4.83 ˚C? Ignore ion pairing.

MW of Na₃PO₄ = 163.94 g/mol

K_f = 1.86 ˚C/m for water

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