Chapter 17, Problem 59QAP

Interpretation Introduction

(a)

Interpretation:

The two-half reaction showing the formation of the complex ion needs to be identified.

Concept introduction:

In a redox reaction, both oxidation and reduction take place. In oxidation, loss of electron/s takes place and oxidation state increases. Similarly, in reduction gain of electron/s takes place and oxidation state decreases. The two half reactions (oxidation and reduction) combines to from a redox reaction.

Interpretation Introduction

(b)

Interpretation:

The standard reduction potential at 25⁰C for the reaction needs to be calculated.

Concept introduction:

The value of electrode potential from formation constant can be calculated using the following relation:

$E^o=\frac{RT}{n}\ln K_f$

Here, R is Universal gas constant, T is temperature, n is number of electrons transferred in a reaction and $K_f$ is formation constant.