Each H2O molecule in crystalline ice is bonded to four tetrahedrally distributed oxygen atoms by hydrogen bonds. (a) Show, by drawing the distinct arrangements of the four hydrogen atoms about a central oxygen atom, that there are six different but equivalent arrangements for each molecule. (b) By also considering the arrangements of the 0 atoms at the corners of the tetradhedron, show that for a lattice of N water molecules, there are ((6)/(4))N chemically equivalent possible arrangements. (c) Hence calculate the molar residual entropy of water.

Each H2O molecule in crystalline ice is bonded to four tetrahedrally distributed oxygen atoms by hydrogen bonds. (a) Show, by drawing the distinct arrangements of the four hydrogen atoms about a central oxygen atom, that there are six different but equivalent arrangements for each molecule. (b) By also considering the arrangements of the 0 atoms at the corners of the tetradhedron, show that for a lattice of N water molecules, there are ((6)/(4))N chemically equivalent possible arrangements. (c) Hence calculate the molar residual entropy of water.

Physical Chemistry

2nd Edition

ISBN:9781133958437

Author:Ball, David W. (david Warren), BAER, Tomas

Publisher:Ball, David W. (david Warren), BAER, Tomas

Chapter22: Surfaces

Section: Chapter Questions

Problem 22.38E

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