   Chapter 18, Problem 58E

Chapter
Section
Textbook Problem

# Using data from Table 18.1, place the following in order of increasing strength as reducing agents (all under standard conditions).     Cu + ,   F − ,   H − ,   H 2 O,   I 2 ,   K

Interpretation Introduction

Interpretation:

The given agents are should be arranged in the increasing order of reducing strengths.

Concept introduction:

Standard reduction potential:

The reducing tendencies of the chemical species are measured at 1M concentration and 1atm pressures for all gases are called standard reduction potential.

In electrochemistry standard reduction potential for Hydrogen is assumed to zero then respect with this, the standard reduction potential for others species are measured and these measured standard reduction potential are arranged in the increasing ordered, this is known as standard reduction potential table.

Explanation

The reducing agents are finally oxidized reduced so the standard reduction potential of chemical species is equal to the strengths of reducing agents.

Hence, the decreasing order of Standard reduction potential is same as the increasing order of reducing strength of chemical species.

The Standard reduction potential of given species are,

Cu++e-CuE°=0.52VF-+e-2F-E°=2.87V2H++2e-H2E°=0

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