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Zirconium is one of the few metals that retains its structural integrity upon exposure to radiation. The fuel rods in most nuclear reactors therefore are often made of zirconium. Answer the following questions about the redox properties of zirconium based on the half-reaction a. Is zirconium metal capable of reducing water to form hydrogen gas at standard conditions? b. Write a balanced equation for the reduction of water by zirconium. c. Calculate , ∆ G °, and K for the reduction of water by zirconium metal. d. The reduction of water by zirconium occurred during the accidents at Three Mile Island in 1979. The hydrogen produced was successfully vented and no chemical explosion occurred. If 1.00 × 10 3 kg Zr reacts, what mass of H 2 is produced? What volume of H 2 at 1.0 atm and 1000.°C is produced? e. At Chernobyl in 1986, hydrogen was produced by the reaction of superheated steam with the graphite reactor core: C ( s ) + H 2 O ( g ) → CO ( g ) + H 2 ( g ) It was not possible to prevent a chemical explosion at Chernobyl. In light of this, do you think it was a correct decision to vent the hydrogen and other radioactive gases into the atmosphere at Three Mile Island? Explain.

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Chemistry: An Atoms First Approach

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

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BuyFindarrow_forward

Chemistry: An Atoms First Approach

2nd Edition
Steven S. Zumdahl + 1 other
Publisher: Cengage Learning
ISBN: 9781305079243
Chapter 18, Problem 82CP
Textbook Problem
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Zirconium is one of the few metals that retains its structural integrity upon exposure to radiation. The fuel rods in most nuclear reactors therefore are often made of zirconium. Answer the following questions about the redox properties of zirconium based on the half-reaction

Chapter 18, Problem 82CP, Zirconium is one of the few metals that retains its structural integrity upon exposure to radiation. , example  1

a. Is zirconium metal capable of reducing water to form hydrogen gas at standard conditions?

b. Write a balanced equation for the reduction of water by zirconium.

c. Calculate Chapter 18, Problem 82CP, Zirconium is one of the few metals that retains its structural integrity upon exposure to radiation. , example  2, ∆G°, and K for the reduction of water by zirconium metal.

d. The reduction of water by zirconium occurred during the accidents at Three Mile Island in 1979. The hydrogen produced was successfully vented and no chemical explosion occurred. If 1.00 × 103 kg Zr reacts, what mass of H2 is produced? What volume of H2 at 1.0 atm and 1000.°C is produced?

e. At Chernobyl in 1986, hydrogen was produced by the reaction of superheated steam with the graphite reactor core:

C ( s ) + H 2 O ( g ) CO ( g ) + H 2 ( g )

It was not possible to prevent a chemical explosion at Chernobyl. In light of this, do you think it was a correct decision to vent the hydrogen and other radioactive gases into the atmosphere at Three Mile Island? Explain.

(a)

Interpretation Introduction

Interpretation: The given questions based upon the redox properties of zirconium are to be answered.

Concept introduction: Zirconium is one of the few metals that retain its structural integrity upon exposure to radiation. The fuel rods in most of the nuclear reactors are therefore often made up of zirconium.

To determine: whether zirconium metal is capable of reducing water to form hydrogen gas at standard conditions.

Explanation of Solution

The zirconium metal is capable of reducing water to form hydrogen gas at standard conditions.

The given half reaction is,

ZrO2.H2O+H2O+4eZr+4OH             E1ο=2.36 V (1)

The half reaction for reduction of water is,

2H2O+2eH

(b)

Interpretation Introduction

Interpretation: The given questions based upon the redox properties of zirconium are to be answered.

Concept introduction: Zirconium is one of the few metals that retain its structural integrity upon exposure to radiation. The fuel rods in most of the nuclear reactors are therefore often made up of zirconium.

(c)

Interpretation Introduction

Interpretation: The given questions based upon the redox properties of zirconium are to be answered.

Concept introduction: Zirconium is one of the few metals that retain its structural integrity upon exposure to radiation. The fuel rods in most of the nuclear reactors are therefore often made up of zirconium.

To determine: The values of Eο, ΔGο and K for the reduction of water by zirconium metal.

(d)

Interpretation Introduction

Interpretation: The given questions based upon the redox properties of zirconium are to be answered.

Concept introduction: Zirconium is one of the few metals that retain its structural integrity upon exposure to radiation. The fuel rods in most of the nuclear reactors are therefore often made up of zirconium.

To determine: whether it was correct decision to vent the hydrogen and other radioactive gases into the atmosphere or not.

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Chapter 18 Solutions

Chemistry: An Atoms First Approach
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