Chemistry: The Molecular Science, Hybrid Edition (with OWLv2 24-Months Printed Access Card)
Chemistry: The Molecular Science, Hybrid Edition (with OWLv2 24-Months Printed Access Card)
5th Edition
ISBN: 9781285461847
Author: John W. Moore, Conrad L. Stanitski
Publisher: Cengage Learning
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Chapter 11, Problem 13QRT

(a)

Interpretation Introduction

Interpretation:

Average rate of reaction in the interval 0.00to0.50h has to be calculated.

Concept Introduction:

Consider the following reaction.

  aA+bBcC

Where A and B are reactants and C is the product. a,bandc are stoichiometric co-efficient of A,BandC.

  rate=-1aΔ[A]Δt=-1bΔ[B]Δt=1cΔ[C]Δt

Where,

    Δ[A]Δt= rate of disappearance of A

    Δ[B]Δt= rate of disappearance of B

    Δ[C]Δt= rate of appearance of C

Rate of the reaction can be expressed in terms of change in concentration of reactant and products by multiplying the reciprocal of the corresponding stoichiometric co-efficient to that.

When the rate is expressed in terms of change in reactant concentration, a minus sign has to be given.  Since change in time will be a positive quantity and reactant concentration decreases with time change in concentration of reactant will be negative.  So in order to make the rate a positive quantity negative sign is given.

But if the rate is expressed in terms of change in concentration of products, which is a positive quantity, no need of negative sign in the rate expression.

(a)

Expert Solution
Check Mark

Answer to Problem 13QRT

Average rate is 0.23molL-1h-1.

Explanation of Solution

Given that the concentration of N2O5 at t=0.00h is 0.849mol/L and the concentration of N2O5 at t=0.50h is 0.733mol/L.

So the average rate can be calculated as follows,

  rate=changeinconcentrationchangeintime=[0.733mol/L0.849mol/L][0.50h0.00h]=0.23molL-1h-1.

Average rate is 0.23molL-1h-1.

(b)

Interpretation Introduction

Interpretation:

Average rate of reaction in the interval 0.50to1.0h has to be calculated.

Concept Introduction:

Refer to part (a).

(b)

Expert Solution
Check Mark

Answer to Problem 13QRT

Average rate is 0.20molL-1h-1.

Explanation of Solution

Given that the concentration of N2O5 at t=0.50h is 0.733mol/L and the concentration of N2O5 at t=1.0h is 0.633mol/L.

So the average rate can be calculated as follows,

  rate=changeinconcentrationchangeintime=[0.633mol/L0.733mol/L][1.0h0.50h]=0.20molL-1h-1.

Average rate is 0.20molL-1h-1.

(c)

Interpretation Introduction

Interpretation:

Average rate of reaction in the interval 1to2h has to be calculated.

Concept Introduction:

Refer to part (a).

(c)

Expert Solution
Check Mark

Answer to Problem 13QRT

Average rate is 0.161molL-1h-1.

Explanation of Solution

Given that the concentration of N2O5 at t=1h is 0.633mol/L and the concentration of N2O5 at t=2.0h is 0.472mol/L.

So the average rate can be calculated as follows,

  rate=changeinconcentrationchangeintime=[0.472mol/L0.633mol/L][2h1h]=0.161molL-1h-1.

Average rate is 0.161molL-1h-1.

(d)

Interpretation Introduction

Interpretation:

Average rate of reaction in the interval 2to3h has to be calculated.

Concept Introduction:

Refer to part (a).

(d)

Expert Solution
Check Mark

Answer to Problem 13QRT

Average rate is 0.120molL-1h-1.

Explanation of Solution

Given that the concentration of N2O5 at t=2h is 0.473mol/L and the concentration of N2O5 at t=3.0h is 0.352mol/L.

So the average rate can be calculated as follows,

  rate=changeinconcentrationchangeintime=[0.352mol/L0.473mol/L][3h2h]=0.120molL-1h-1.

Average rate is 0.120molL-1h-1.

(e)

Interpretation Introduction

Interpretation:

Average rate of reaction in the interval 3to4h has to be calculated.

Concept Introduction:

Refer to part (a).

(e)

Expert Solution
Check Mark

Answer to Problem 13QRT

Average rate is 0.090molL-1h-1.

Explanation of Solution

Given that the concentration of N2O5 at t=3h is 0.352mol/L and the concentration of N2O5 at t=4h is 0.262mol/L.

So the average rate can be calculated as follows,

  rate=changeinconcentrationchangeintime=[0.262mol/L0.352mol/L][4h3h]=0.090molL-1h-1.

Average rate is 0.090molL-1h-1.

(f)

Interpretation Introduction

Interpretation:

Average rate of reaction in the interval 4to5h has to be calculated.

Concept Introduction:

Refer to part (a).

(f)

Expert Solution
Check Mark

Answer to Problem 13QRT

Average rate is 0.066molL-1h-1.

Explanation of Solution

Given that the concentration of N2O5 at t=4h is 0.262mol/L and the concentration of N2O5 at t=5h is 0.196mol/L.

So the average rate can be calculated as follows,

  rate=changeinconcentrationchangeintime=[0.196mol/L0.262mol/L][5h4h]=0.066molL-1h-1.

Average rate is 0.066molL-1h-1.

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Chapter 11 Solutions

Chemistry: The Molecular Science, Hybrid Edition (with OWLv2 24-Months Printed Access Card)

Ch. 11.3 - Prob. 11.6PSPCh. 11.3 - Prob. 11.7PSPCh. 11.4 - Prob. 11.6ECh. 11.4 - Prob. 11.7CECh. 11.4 - Prob. 11.8PSPCh. 11.4 - Prob. 11.8CECh. 11.5 - Prob. 11.9PSPCh. 11.5 - The frequency factor A is 6.31 108 L mol1 s1 and...Ch. 11.6 - Prob. 11.10CECh. 11.7 - Prob. 11.11ECh. 11.7 - The Raschig reaction produces the industrially...Ch. 11.7 - Prob. 11.12ECh. 11.8 - The oxidation of thallium(I) ion by cerium(IV) ion...Ch. 11.9 - Prob. 11.11PSPCh. 11.9 - Prob. 11.14CECh. 11 - An excellent way to make highly pure nickel metal...Ch. 11 - Prob. 1QRTCh. 11 - Prob. 2QRTCh. 11 - Prob. 3QRTCh. 11 - Prob. 4QRTCh. 11 - Prob. 5QRTCh. 11 - Prob. 6QRTCh. 11 - Prob. 7QRTCh. 11 - Prob. 8QRTCh. 11 - Prob. 9QRTCh. 11 - Prob. 10QRTCh. 11 - Prob. 11QRTCh. 11 - Cyclobutane can decompose to form ethylene: The...Ch. 11 - Prob. 13QRTCh. 11 - Prob. 14QRTCh. 11 - For the reaction 2NO2(g)2NO(g)+O2(g) make...Ch. 11 - Prob. 16QRTCh. 11 - Prob. 17QRTCh. 11 - Ammonia is produced by the reaction between...Ch. 11 - Prob. 19QRTCh. 11 - Prob. 20QRTCh. 11 - The reaction of CO(g) + NO2(g) is second-order in...Ch. 11 - Nitrosyl bromide, NOBr, is formed from NO and Br2....Ch. 11 - Prob. 23QRTCh. 11 - Prob. 24QRTCh. 11 - Prob. 25QRTCh. 11 - For the reaction these data were obtained at 1100...Ch. 11 - Prob. 27QRTCh. 11 - Prob. 28QRTCh. 11 - Prob. 29QRTCh. 11 - Prob. 30QRTCh. 11 - Prob. 31QRTCh. 11 - Prob. 32QRTCh. 11 - For the reaction of phenyl acetate with water the...Ch. 11 - When phenacyl bromide and pyridine are both...Ch. 11 - The compound p-methoxybenzonitrile N-oxide, which...Ch. 11 - Prob. 36QRTCh. 11 - Radioactive gold-198 is used in the diagnosis of...Ch. 11 - Prob. 38QRTCh. 11 - Prob. 39QRTCh. 11 - Prob. 40QRTCh. 11 - Prob. 41QRTCh. 11 - Prob. 42QRTCh. 11 - Prob. 43QRTCh. 11 - Prob. 44QRTCh. 11 - Prob. 45QRTCh. 11 - Prob. 46QRTCh. 11 - Prob. 47QRTCh. 11 - Prob. 48QRTCh. 11 - Prob. 49QRTCh. 11 - Prob. 50QRTCh. 11 - Prob. 51QRTCh. 11 - Prob. 52QRTCh. 11 - For the reaction of iodine atoms with hydrogen...Ch. 11 - Prob. 54QRTCh. 11 - The activation energy Ea is 139.7 kJ mol1 for the...Ch. 11 - Prob. 56QRTCh. 11 - Prob. 57QRTCh. 11 - Prob. 58QRTCh. 11 - Prob. 59QRTCh. 11 - Prob. 60QRTCh. 11 - Prob. 61QRTCh. 11 - Prob. 62QRTCh. 11 - Prob. 63QRTCh. 11 - Which of the reactions in Question 62 would (a)...Ch. 11 - Prob. 65QRTCh. 11 - Prob. 66QRTCh. 11 - Prob. 67QRTCh. 11 - Prob. 68QRTCh. 11 - Prob. 69QRTCh. 11 - Prob. 70QRTCh. 11 - Prob. 71QRTCh. 11 - For the reaction the rate law is Rate=k[(CH3)3CBr]...Ch. 11 - Prob. 73QRTCh. 11 - Prob. 74QRTCh. 11 - Prob. 75QRTCh. 11 - For this reaction mechanism, write the chemical...Ch. 11 - Prob. 77QRTCh. 11 - Prob. 78QRTCh. 11 - Prob. 79QRTCh. 11 - When enzymes are present at very low...Ch. 11 - Prob. 81QRTCh. 11 - The reaction is catalyzed by the enzyme succinate...Ch. 11 - Prob. 83QRTCh. 11 - Many biochemical reactions are catalyzed by acids....Ch. 11 - Prob. 85QRTCh. 11 - Prob. 86QRTCh. 11 - Prob. 87QRTCh. 11 - Prob. 88QRTCh. 11 - Prob. 89QRTCh. 11 - Prob. 90QRTCh. 11 - Prob. 91QRTCh. 11 - Prob. 92QRTCh. 11 - Prob. 93QRTCh. 11 - Prob. 94QRTCh. 11 - Nitryl fluoride is an explosive compound that can...Ch. 11 - Prob. 96QRTCh. 11 - Prob. 97QRTCh. 11 - For a reaction involving the decomposition of a...Ch. 11 - Prob. 99QRTCh. 11 - Prob. 100QRTCh. 11 - Prob. 101QRTCh. 11 - This graph shows the change in concentration as a...Ch. 11 - Prob. 103QRTCh. 11 - Prob. 104QRTCh. 11 - Prob. 105QRTCh. 11 - Prob. 106QRTCh. 11 - Prob. 107QRTCh. 11 - Prob. 108QRTCh. 11 - Prob. 109QRTCh. 11 - Prob. 110QRTCh. 11 - Prob. 111QRTCh. 11 - Prob. 112QRTCh. 11 - Prob. 113QRTCh. 11 - Prob. 114QRTCh. 11 - Prob. 115QRTCh. 11 - Prob. 116QRTCh. 11 - Prob. 118QRTCh. 11 - Prob. 119QRTCh. 11 - In a time-resolved picosecond spectroscopy...Ch. 11 - If you know some calculus, derive the integrated...Ch. 11 - If you know some calculus, derive the integrated...Ch. 11 - (Section 11-5) A rule of thumb is that for a...Ch. 11 - Prob. 11.BCPCh. 11 - Prob. 11.CCPCh. 11 - Prob. 11.DCP
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