The activity of a pure solid or liquid is approximately where V is the molar volume. For

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The activity of a pure solid or liquid is approximately

a = "V(P - P)` P] RT expl

where V̅ is the molar volume. For a pure solid or liquid under typical conditions, the quantity V̅(P - P°)/(RT) is quite small, primarily because V̅ is small, and so a ≈ 1. Use the following data, for liquid water at 300 K, to verify that a ≈ 1 over a wide range of pressures.

P, bar d, g mL-1 1.0 10.0 100.0 0.99656 0.99696 1.0010 1000.0 1.0372

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General Chemistry Principles And Modern Applications

ISBN: 9780132931281

11th Edition

Authors: Ralph Petrucci, Jeffry Madura, F. Herring, Carey Bissonnette

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