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Chemistry & Chemical Reactivity

10th Edition
John C. Kotz + 3 others
ISBN: 9781337399074

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BuyFindarrow_forward

Chemistry & Chemical Reactivity

10th Edition
John C. Kotz + 3 others
ISBN: 9781337399074
Textbook Problem

Iodine, I2, dissolves readily in carbon tetrachloride. For this process, ΔH° = 0 kJ/mol.

I2(s) → I2 (in CCl4 solution)

What is the sign of ΔrG°? Is the dissolving process entropy-driven or enthalpy-driven? Explain briefly.

Interpretation Introduction

Interpretation:

The sign of ΔrG° for the dissolution of iodine solid in carbon tetrachloride should be identified also that this process is entropy or enthalpy driven should be explained.

Concept introduction:

The Gibbs free energy or the free energy change is a thermodynamic quantity represented by ΔGo. It is related to entropy and entropy by the following expression,

  ΔGo= ΔHo-TΔSo

The sign of ΔrGo should be negative for a product-favored reaction. Thus, spontaneous reactions are referred to those that have negative free energy formation.

Explanation

The dissolution process of iodine in carbon tetrachloride is product favoured since iodine dissolves readily mean the reaction is spontaneous. The ΔGo

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