   Chapter 21, Problem 77PS

Chapter
Section
Textbook Problem

The halogen oxides and oxoanions are good oxidizing agents. For example, the reduction of bromate ion has an E° value of 1.44 V in acid solution: 2 BrO 3 − (aq) + 12H + (aq) + 10   e − → Br 2 (aq) + 6 H 2 O ( l ) Is it possible to oxidize aqueous 1.0 M Mn2+ to aqueous MnO4− with 1.0 M bromate ion?

Interpretation Introduction

Interpretation:

Is it possible to oxidize aqueous 1MMn+2 to aqueous MnO4 with 1MBrO3 ion is to be stated.

Concept introduction:

An oxidation and reduction occur simultaneously in redox reactions. The half reaction in which loss of electrons occur is called oxidation reaction. Similarly, the half reaction in which gain of electrons occur is called reduction reaction.

The standard cell potential expression is written as follows,

Ecell=Ecathode+Eanode

Negative value of Ecell indicates the reaction proceeds spontaneously in backward direction.

Explanation

In any electrochemical reaction, electrons goes from one substance to another substance driven by the oxidation-reduction reaction. Electrochemical cells have two conducting electrodes, called the anode and cathode. The anode is defined as the electrode where oxidation occurs. The cathode is the electrode where reduction take place. Standard electrode potential Ecell can be calculated for both oxidation and reduction reactions. A positive value of (ECell) indicates that the reaction proceeds spontaneously in the forward direction whereas, a negative value of Ecell indicates that the reaction proceeds spontaneously in backward direction. The standard cell potential expression is written as follows,

Ecell=Ecathode+Eanode (1)

Given:

The reaction of reduction of bromate ion in acid solution is written as,

2BrO32(aq)+12H+(aq)+10eBr2(aq)+6H2O(l)

The Ecathode value for reduction of bromate ion is 1.44V.

Refer to the appendix M

The Eanode value for the oxidation of Mn+2 ion is 1

Still sussing out bartleby?

Check out a sample textbook solution.

See a sample solution

The Solution to Your Study Problems

Bartleby provides explanations to thousands of textbook problems written by our experts, many with advanced degrees!

Get Started 