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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

When CrCI3 dissolves in water, three different species can be obtained.

(a) [Cr(H2O)6]Cl3 violet

(b) [Cr(H2O)5Cl]Cl2, pale green

(c) [Cr(H2O)4Cl2]Cl, dark green

If diethyl ether is added, a fourth complex can be obtained: Cr(H2O)3Cl3 (brown). Describe an experiment that will allow you to differentiate these complexes.

Interpretation Introduction

Interpretation: An experiment that differentiates the given species has to be described.

Concept introduction:

Isomerism: Isomers are compounds with same molecular formula with different arrangements of atoms.

  • Structural isomers: Have same molecular formula but different bonding arrangements of atoms. It is classified into coordination isomer (occurs by exchanging a coordinated ligand and the counter-ions) and linkage isomers (ligand attached through different atoms to the metal).
  • Stereoisomers: differ in their spatial arrangement of atoms.
Explanation

The given three [Cr(H2O)6]Cl3;[Cr(H2O)5Cl]Cl2;[Cr(H2O)4Cl2]Cl coordination isomers are formed by dissolving CrCl3 in water which can be differentiated by precipitation reaction process

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