   # Write equations for the stepwise formation of each of the following complex ions. a. Ni(CN) 4 2− b. V(C 2 O 4 ) 3 3− ### Chemistry: An Atoms First Approach

2nd Edition
Steven S. Zumdahl + 1 other
Publisher: Cengage Learning
ISBN: 9781305079243

#### Solutions

Chapter
Section ### Chemistry: An Atoms First Approach

2nd Edition
Steven S. Zumdahl + 1 other
Publisher: Cengage Learning
ISBN: 9781305079243
Chapter 15, Problem 61E
Textbook Problem
180 views

## Write equations for the stepwise formation of each of the following complex ions.a. Ni(CN)42−b. V(C2O4)33−

Interpretation Introduction

Interpretation: The equation for the stepwise formation of each Ni(CN)42 and V(C2O4)33 complex ion is to be stated.

Concept introduction: The charged species that contains metal ion surrounded by ligands is known as complex ion.

The stepwise formation constants explain the formation of complex ion product from its central atom.

### Explanation of Solution

Explanation

To determine: The equation for the stepwise formation of each Ni(CN)42 and V(C2O4)33 complex ion.

The equation for the stepwise formation of Ni(CN)42 is,

Ni2++4CNNi(CN)42

Ligands are added by metal ions one by one, in steps that are characterized by equilibrium constants known as formation constants. These are also known as stability constant.

The complex ion Ni(CN)42 is formed by the combination of Ni2+ and CN . In this solution all the species CN,Ni2+,NiCN+,Ni(CN)2,Ni(CN)3 and Ni(CN)4 exists at equilibrium.

The equations for the stepwise formation of Ni(CN)42 is,

Ni2++CNNiCN+NiCN++CNNi(CN)2Ni(CN)2+CNNi(CN)3Ni(CN)3+CNNi(CN)42

Add these equations and cancel the like terms to get the resultant equation,

Ni2++4CNNi(CN)42

The equation for the stepwise formation of V(C2O4)3

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