Foundations of College Chemistry 15e Binder Ready Version + WileyPLUS Registration Card
15th Edition
ISBN: 9781119231318
Author: Morris Hein
Publisher: Wiley (WileyPLUS Products)
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Chapter 13, Problem 71CE
Interpretation Introduction
Interpretation:
Boiling point temperature of water in Ely, Nevada, Honolulu, and Dead Sea region has to be determined.
Concept Introduction:
Temperature at which vapor pressure becomes equal to the external pressure is termed as boiling point. Pressure that is exerted by the atmosphere is called atmospheric pressure. The standard atmospheric pressure is
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Substance
Melting
Point
Sodium Chloride (NaCl)
801°C
Table Sugar- Sucrose
186 °C
(C,H011)
Melting point data of salt and sugar are noted in the table above. Which of the
following best explains the trend observed?
When sodium chloride melts, intramolecular attractions are being broken. These
are stronger than the intermolecular attractions that are being broken when
sucrose melts, therefore requiring more energy to melt sodium chloride than is
required for sucrose.
Both sodium chloride and sucrose have very strong intramolecular attractions.
However, because this is combined with much stronger intermolecular
attractions in sodium chloride, sodium chloride will have a higher melting point.
When sodium chloride and sucrose melt, intermolecular attractions are broken.
Sodium chloride has a higher melting point than sucrose because these
intermolecular attractions in sodium chloride are stronger than in sucrose.
58°F Clear
You prepare a 5.46 M solution of sodium chloride, NaCl (table salt) to cook your pasta. Its density is 1.28 g/ml. At what temperature will it boil (assume that your kitchen is more or less at sea level, so your atmospheric pressure is 1 atm.)
Give your final answer (remember, you're looking for the new normal boiling point) to 1 decimal place
Kb(H2O) = 0.52 °C/m
Chapter 13 Solutions
Foundations of College Chemistry 15e Binder Ready Version + WileyPLUS Registration Card
Ch. 13.2 - Prob. 13.1PCh. 13.2 - Prob. 13.2PCh. 13.3 - Prob. 13.3PCh. 13.3 - Prob. 13.4PCh. 13.4 - Prob. 13.5PCh. 13.5 - Prob. 13.6PCh. 13.5 - Prob. 13.7PCh. 13.5 - Prob. 13.8PCh. 13.6 - Prob. 13.9PCh. 13.6 - Prob. 13.10P
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