Chapter 17, Problem 87QRT

Interpretation Introduction

Interpretation:

The reaction taking place when $\text{1}\text{.0}\text{M}$ solution of ${\text{Cr}}_{\text{2}}{\text{O}}_7^{2-}$ is added to a $\text{1}\text{.0}\text{M}$ solution of $\text{HBr}$ is to be stated.

Concept Introduction:

The standard cell potential for an electrochemical cell can be obtained by using the half cell reaction taking place at cathode and anode.  The standard cell potential can be used to predict the spontaneity of a reaction.  A spontaneous reaction will always have a sportive value of cell potential whereas a non spontaneous reaction will have a negative value of standard cell potential.