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Chemistry & Chemical Reactivity

9th Edition
John C. Kotz + 3 others
Publisher: Cengage Learning
ISBN: 9781133949640

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Chapter
Section
BuyFindarrow_forward

Chemistry & Chemical Reactivity

9th Edition
John C. Kotz + 3 others
Publisher: Cengage Learning
ISBN: 9781133949640
Chapter 11.2, Problem 1RC
Textbook Problem
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Which should have the more negative enthalpy of hydration?

  1. (a) MgCl2
  2. (b) AlCl3

Interpretation Introduction

Interpretation: It should be determined for the more negative enthalpy of hydration for the given molecule.

Concept introduction:

Hydration enthalpies:

The heat energy released when new bonds are made or formed between the ions and water molecules is known as the hydration enthalpy of the ion.

The hydration enthalpy is defined as the enthalpy change when 1 mole of gaseous ion dissolve in sufficient water to give an infinitely dilute solution.

Hydration enthalpies are always negative.

Explanation of Solution

Hydration enthalpies of AlCl3 is more because when it hydrated with water  then the huge amount of heat energy released and the new bond are formed.

Hydration enthalpies are always negative

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Chapter 11 Solutions

Chemistry & Chemical Reactivity
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