In Example 13-3, we dealt with vap H and vap S for water at 100

Question:

In Example 13-3, we dealt with ΔvapH° and ΔvapS° for water at 100 °C.

(a) Use data from Appendix D to determine values for these two quantities at 25 °C.

(b) From your knowledge of the structure of liquid water, explain the differences in ΔvapH° values and in ΔvapS° values between 25 °C and 100 °C.

Example 13-3

What is the standard molar entropy change for the vaporization of water at 373 K given that the standard molar enthalpy of vaporization is 40.7 kJ mol-1 at this temperature?

TABLE D.1 Ground-State Electron Configurations Element Configuration Z Z 1 2 3 4 5 6 7 8 9 HIG&LUZONSUZ SE> 0

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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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