At standard temperature and pressure, the molar volumesof Cl2 and NH3 gases are 22.06 and 22.40 L, respectively.(a) Given the different molecular weights, dipole moments,and molecular shapes, why are their molar volumes nearlythe same? (b) On cooling to 160 K, both substances formcrystalline solids. Do you expect the molar volumes todecrease or increase on cooling the gases to 160 K? (c) Thedensities of crystalline Cl2 and NH3 at 160 K are 2.02 and0.84 g>cm3, respectively. Calculate their molar volumes.(d) Are the molar volumes in the solid state as similar asthey are in the gaseous state? Explain. (e) Would you expectthe molar volumes in the liquid state to be closer to thosein the solid or gaseous state?
At standard temperature and pressure, the molar volumesof Cl2 and NH3 gases are 22.06 and 22.40 L, respectively.(a) Given the different molecular weights, dipole moments,and molecular shapes, why are their molar volumes nearlythe same? (b) On cooling to 160 K, both substances formcrystalline solids. Do you expect the molar volumes todecrease or increase on cooling the gases to 160 K? (c) Thedensities of crystalline Cl2 and NH3 at 160 K are 2.02 and0.84 g>cm3, respectively. Calculate their molar volumes.(d) Are the molar volumes in the solid state as similar asthey are in the gaseous state? Explain. (e) Would you expectthe molar volumes in the liquid state to be closer to thosein the solid or gaseous state?
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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Question
At standard temperature and pressure, the molar volumes
of Cl2 and NH3 gases are 22.06 and 22.40 L, respectively.
(a) Given the different molecular weights, dipole moments,
and molecular shapes, why are their molar volumes nearly
the same? (b) On cooling to 160 K, both substances form
crystalline solids. Do you expect the molar volumes to
decrease or increase on cooling the gases to 160 K? (c) The
densities of crystalline Cl2 and NH3 at 160 K are 2.02 and
0.84 g>cm3, respectively. Calculate their molar volumes.
(d) Are the molar volumes in the solid state as similar as
they are in the gaseous state? Explain. (e) Would you expect
the molar volumes in the liquid state to be closer to those
in the solid or gaseous state?
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