Chapter 19, Problem 90E

Interpretation Introduction

Interpretation:

To explain, ∆G_f⁰ for the hydrogen halides become less negative with increasing atomic number, ∆G of HI is slightly positive and ∆S_f⁰ more positive with increasing atomic number.

Concept introduction:

To define as a enthalpy (∆H) and entropy (∆S), Enthalpy is the heat of reaction. A positive value means that the surroundings are doing work on the system, and a negative value means the opposite, that the system is doing work on the surroundings.

To explain:

∆G_f⁰ for the hydrogen halides become less negative with increasing atomic number, ∆G of HI is slightly positive and ∆S_f⁰ more positive with increasing atomic number.