Generl Chem Looself&mod Mst/et&stdy Crd Pkg, 11/e
Generl Chem Looself&mod Mst/et&stdy Crd Pkg, 11/e
1st Edition
ISBN: 9780134646534
Author: Petrucci
Publisher: PEARSON
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Textbook Question
Chapter 19, Problem 1E

From the observations listed, estimate the value of E ° for the half-cell reaction M 2+ ( aq ) +2e - M ( s ) .

a. The metal M reacts with HNO 2 ( aq ) , but not with HCl ( aq ) , M displaces Ag(aq), but not Cu 2 + ( aq )

b. The metal M reacts with HCI(aq), producing H 2 ( g ) , but displaces neither Zn 2+ ( aq ) nor Fe 2 + ( aq ) .

Expert Solution
Check Mark
Interpretation Introduction

(a)

Interpretation:

The value of E°cellshould be estimated for the half reaction of M2+(aq)+2eM(s) where M reacts with HNO3(aq), but not with HCl and M displaces Ag+(aq), but not Cu2+(aq).

Concept introduction:

The solid metal should have higher reactivity than the aqueous metal in order to observe the displacement.

In order to react with an acid, the acid anion should have higher reduction potential while oxidizing the metal to metal cation in the acidic medium.

Answer to Problem 1E

0.340<Ecell<0.800

Explanation of Solution

If M displaces the Ag+(aq) the E°cell  of given M reduction half-cell should be lower than the E°cell  value of the Ag+ reduction and if M doesn’t displaces the Cu2+(aq) the E°cell  of given M reduction half-cell should be higher than the E°cell  value of the Cu2+ reduction.

Therefore, lower limit of the estimation for the E°cell  of given M reduction half-cell should be the value of E°cell  of the Cu2+(aq) reduction and the upper limit of the estimation for the E°cell  of given M reduction half-cell should be the value of E°cell  of the Ag+(aq).

E Cu+ Red<Ecell<E Ag+ Red0.340<Ecell<0.800

Expert Solution
Check Mark
Interpretation Introduction

(b)

Interpretation:

The value of E°cell  should be estimated for the half reaction of M2+(aq)+2eM(s) where M reacts with HCl, producing H2(g), but displaces neither Zn+(aq) nor Fe2+(aq).

Concept introduction:

The solid metal should have higher reactivity than the aqueous metal in order to observe the displacement.

In order to react with an acid, the acid anion should have higher reduction potential while oxidizing the metal to metal cation in the acidic medium.

Answer to Problem 1E

0.440<Ecell<0.00

Explanation of Solution

If displaces neither Zn+(aq) nor Fe2+(aq), the E°cell  of given M reduction half-cell should be higher than the both E°cell  values while it should be lower than the E°cell  value of H+ reduction to H2(g).

Therefore, lower limit of the estimation for the E°cell  of given M reduction half-cell should be the value of E°cell  of the Fe2+(aq) reduction and the upper limit of the estimation for the E°cell  of given M reduction half-cell should be the value of E°cell  of the H+(aq).

E Fe 2+ Red<Ecell<E Zn 2+ Red0.440<Ecell<0.00

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Chapter 19 Solutions

Generl Chem Looself&mod Mst/et&stdy Crd Pkg, 11/e

Ch. 19 - Assume that all reactants and products are in...Ch. 19 - For the readuction half-cell reactions...Ch. 19 - Use date from Table 19.1 to predict whether, to...Ch. 19 - Prob. 14ECh. 19 - Dihromate ion (C2I72-) in acidic solution is a...Ch. 19 - Prob. 16ECh. 19 - Prob. 17ECh. 19 - Predict whether, to any significant extent. a....Ch. 19 - Write cell reactions for the electrochemical cells...Ch. 19 - Write the half-cell reactions and the balanced...Ch. 19 - Prob. 21ECh. 19 - In each of the following examples, sketch a...Ch. 19 - Use the data in Appendix D to calculate the...Ch. 19 - Write a cell diagram and call diagram the value of...Ch. 19 - Determine the values of tG for the following...Ch. 19 - Prob. 26ECh. 19 - Prob. 27ECh. 19 - Consider the voltaic cell below....Ch. 19 - Prob. 29ECh. 19 - Prob. 30ECh. 19 - Prob. 31ECh. 19 - The theoretical voltage of the aluminum-air...Ch. 19 - Prob. 33ECh. 19 - Prob. 34ECh. 19 - Prob. 35ECh. 19 - Prob. 36ECh. 19 - Prob. 37ECh. 19 - Use the Nernst equation and data from Appendix D...Ch. 19 - Prob. 39ECh. 19 - Prob. 40ECh. 19 - If [Zn2+] is maintained at 1.0 M, a. what the...Ch. 19 - Prob. 42ECh. 19 - Prob. 43ECh. 19 - Prob. 44ECh. 19 - Consider the voltaic cell Mg Mg(s)Mg2+ (satd Mg2(...Ch. 19 - Prob. 46ECh. 19 - For the voltaic cell,...Ch. 19 - For the voltaic cell,...Ch. 19 - Prob. 49ECh. 19 - Derive e balanced equation for the reaction...Ch. 19 - Prob. 51ECh. 19 - Prob. 52ECh. 19 - Prob. 53ECh. 19 - Prob. 54ECh. 19 - Prob. 55ECh. 19 - Prob. 56ECh. 19 - Prob. 57ECh. 19 - Prob. 58ECh. 19 - Refer to Figure 19-20, . end describe en words or...Ch. 19 - Prob. 60ECh. 19 - Natural gas transmission pipes are sometimes...Ch. 19 - Prob. 62ECh. 19 - How many gram of metal are deposited at the...Ch. 19 - A quantity of electric charge brings about the...Ch. 19 - Which of the blowing reactions occur spontaneously...Ch. 19 - An aqueous solution of K2SO4 , is electrolyzed by...Ch. 19 - Prob. 67ECh. 19 - Prob. 68ECh. 19 - Calculate the quantity indicated for each of the...Ch. 19 - Calculate the quantity indicated for each of the...Ch. 19 - Prob. 71ECh. 19 - Prob. 72ECh. 19 - Prob. 73ECh. 19 - A solution containing a mixture of a platinum(H)...Ch. 19 - Prob. 75IAECh. 19 - Suppose that a fully charged lead-acid battery...Ch. 19 - Prob. 77IAECh. 19 - For the half-cell reaction...Ch. 19 - Prob. 79IAECh. 19 - Prob. 80IAECh. 19 - Describe a laboratory experiment that you co...Ch. 19 - Prob. 82IAECh. 19 - Prob. 83IAECh. 19 - Prob. 84IAECh. 19 - Prob. 85IAECh. 19 - Prob. 86IAECh. 19 - Prob. 87IAECh. 19 - A common reference electrode consists of a silver...Ch. 19 - The electrodes in the following electrochemical...Ch. 19 - Prob. 90IAECh. 19 - Prob. 91IAECh. 19 - A solution is prepared by saturating 1000 mL of...Ch. 19 - Prob. 93IAECh. 19 - Prob. 94IAECh. 19 - Prob. 95IAECh. 19 - Prob. 96IAECh. 19 - Prob. 97IAECh. 19 - Prob. 98IAECh. 19 - Prob. 99IAECh. 19 - Prob. 100IAECh. 19 - Consider the following electrochemical cell:...Ch. 19 - Prob. 102FPCh. 19 - Prob. 103FPCh. 19 - Prob. 104FPCh. 19 - Prob. 105FPCh. 19 - Consider two cells involving two metals X and Y...Ch. 19 - Prob. 107FPCh. 19 - Prob. 108FPCh. 19 - Some electrochemical cells employ large biological...Ch. 19 - Prob. 110FPCh. 19 - Prob. 111SAECh. 19 - Prob. 112SAECh. 19 - Explain the important distinctions between each...Ch. 19 - Prob. 114SAECh. 19 - Prob. 115SAECh. 19 - Prob. 116SAECh. 19 - Prob. 117SAECh. 19 - The gas evolved at e anode when K2SO4(aq) is...Ch. 19 - Prob. 119SAECh. 19 - Prob. 120SAECh. 19 - Prob. 121SAECh. 19 - The following voltaic cell registers an...Ch. 19 - Prob. 123SAECh. 19 - For each of the following combination of...Ch. 19 - Prob. 125SAECh. 19 - Prob. 126SAECh. 19 - Prob. 127SAECh. 19 - Construct a concept map illustrating the...
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