General Chemistry
General Chemistry
4th Edition
ISBN: 9781891389603
Author: Donald A. McQuarrie, Peter A. Rock, Ethan B. Gallogly
Publisher: University Science Books
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Chapter 23, Problem 23.64P

(a)

Interpretation Introduction

Interpretation:

Value of ΔSrxno has to be determined for the reaction I2(s)I2(g).

Concept Introduction:

Entropy(S): it is used to describe the disorder. It is the amount of arrangements possible in a system at a particular state.

Value of ΔSrxno can be calculated by the equation:

  ΔSrxnoS°[products]S°[reactants]

(a)

Expert Solution
Check Mark

Answer to Problem 23.64P

Value of ΔSrxno is 144.6J/Kmol.

Explanation of Solution

The given reaction is shown below,

  I2(s)I2(g)

Standard enthalpy of formation values is given below,

  ΔS°[I2(s)]=116.1J/KmolΔS°[I2(g)]=260.7J/Kmol

Value of ΔSrxno can be calculated by the equation:

  ΔSrxnoS°[products]S°[reactants]

Substitute the values as follows,

  ΔSrxno[(1)(260.7J/Kmol)][(1)(116.1J/Kmol)]= 144.6J/Kmol

(b)

Interpretation Introduction

Interpretation:

Value of ΔSrxno has to be determined for the reaction BaCO3(s)BaO(s) + CO2(g).

Concept Introduction:

Refer to (a).

(b)

Expert Solution
Check Mark

Answer to Problem 23.64P

Value of ΔSrxno is 173.8J/Kmol.

Explanation of Solution

The given reaction is shown below,

  BaCO3(s)BaO(s) + CO2(g)

Standard enthalpy of formation values is given below,

  ΔS°[BaCO3(s)]=112.1J/KmolΔS°[BaO(s)]=72.1J/KmolΔS°[CO2(g)]=213.8J/Kmol

Value of ΔSrxno can be calculated by the equation:

  ΔSrxnoS°[products]S°[reactants]

Substitute the values as follows,

  ΔSrxno[(1)(72.1J/Kmol)+(1)(213.8J/Kmol)][(1)(112.1J/Kmol)]= 173.8J/Kmol

(c)

Interpretation Introduction

Interpretation:

Value of ΔSrxno has to be determined for the reaction CH4(g) + Cl2(g)CH3Cl(g)+ HCl(g).

Concept Introduction:

Refer to (a).

(c)

Expert Solution
Check Mark

Answer to Problem 23.64P

Value of ΔSrxno is 12.1J/Kmol.

Explanation of Solution

The given reaction is shown below,

  CH4(g) + Cl2(g)CH3Cl(g)+ HCl(g)

Standard enthalpy of formation values is given below,

  ΔS°[CH4(g)]=186.3J/KmolΔS°[Cl2(g)]=223.1J/KmolΔS°[CH3Cl(g)]=234.6J/KmolΔS°[HCl(g)]=186.9J/Kmol

Value of ΔSrxno can be calculated by the equation:

  ΔSrxnoS°[products]S°[reactants]

Substitute the values as follows,

  ΔSrxno[(1)(234.6J/Kmol)+(1)(186.9J/Kmol)] [(1)(186.3J/Kmol)+(1)(223.1J/Kmol)]= 12.1J/Kmol

(d)

Interpretation Introduction

Interpretation:

Value of ΔSrxno has to be determined for the reaction 2 NaBr(s) + Cl2(g)2 NaCl(s)+ Br2(l).

Concept Introduction:

Refer to (a).

(d)

Expert Solution
Check Mark

Answer to Problem 23.64P

Value of ΔSrxno is 100.3 J/Kmol.

Explanation of Solution

The given reaction is shown below,

  2 NaBr(s) + Cl2(g)2 NaCl(s)+ Br2(l)

Standard enthalpy of formation values is given below,

  ΔS°[NaBr(s)]=86.8J/KmolΔS°[Cl2(g)]=223.1J/KmolΔS°[NaCl(s)]=72.1J/KmolΔS°[Br2(l)]=152.2J/Kmol

Value of ΔSrxno can be calculated by the equation:

  ΔSrxnoS°[products]S°[reactants]

Substitute the values as follows,

  ΔSrxno[(2)(72.1J/Kmol)+(1)(152.2J/Kmol)] [(2)(86.8J/Kmol)+(1)(223.1J/Kmol)]=100.3 J/Kmol

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Chapter 23 Solutions

General Chemistry

Ch. 23 - Prob. 23.11PCh. 23 - Prob. 23.12PCh. 23 - Prob. 23.13PCh. 23 - Prob. 23.14PCh. 23 - Prob. 23.15PCh. 23 - Prob. 23.16PCh. 23 - Prob. 23.17PCh. 23 - Prob. 23.18PCh. 23 - Prob. 23.19PCh. 23 - Prob. 23.20PCh. 23 - Prob. 23.21PCh. 23 - Prob. 23.22PCh. 23 - Prob. 23.23PCh. 23 - Prob. 23.24PCh. 23 - Prob. 23.25PCh. 23 - Prob. 23.26PCh. 23 - Prob. 23.27PCh. 23 - Prob. 23.28PCh. 23 - Prob. 23.29PCh. 23 - Prob. 23.30PCh. 23 - Prob. 23.31PCh. 23 - Prob. 23.32PCh. 23 - Prob. 23.33PCh. 23 - Prob. 23.34PCh. 23 - Prob. 23.35PCh. 23 - Prob. 23.36PCh. 23 - Prob. 23.37PCh. 23 - Prob. 23.38PCh. 23 - Prob. 23.39PCh. 23 - Prob. 23.40PCh. 23 - Prob. 23.41PCh. 23 - Prob. 23.42PCh. 23 - Prob. 23.43PCh. 23 - Prob. 23.44PCh. 23 - Prob. 23.45PCh. 23 - Prob. 23.46PCh. 23 - Prob. 23.47PCh. 23 - Prob. 23.48PCh. 23 - Prob. 23.49PCh. 23 - Prob. 23.50PCh. 23 - Prob. 23.51PCh. 23 - Prob. 23.52PCh. 23 - Prob. 23.53PCh. 23 - Prob. 23.54PCh. 23 - Prob. 23.55PCh. 23 - Prob. 23.56PCh. 23 - Prob. 23.57PCh. 23 - Prob. 23.58PCh. 23 - Prob. 23.59PCh. 23 - Prob. 23.60PCh. 23 - Prob. 23.61PCh. 23 - Prob. 23.62PCh. 23 - Prob. 23.63PCh. 23 - Prob. 23.64PCh. 23 - Prob. 23.65PCh. 23 - Prob. 23.66PCh. 23 - Prob. 23.67PCh. 23 - Prob. 23.68PCh. 23 - Prob. 23.69PCh. 23 - Prob. 23.70PCh. 23 - Prob. 23.71PCh. 23 - Prob. 23.72PCh. 23 - Prob. 23.73PCh. 23 - Prob. 23.74PCh. 23 - Prob. 23.75PCh. 23 - Prob. 23.76PCh. 23 - Prob. 23.77PCh. 23 - Prob. 23.78PCh. 23 - Prob. 23.79PCh. 23 - Prob. 23.80PCh. 23 - Prob. 23.81PCh. 23 - Prob. 23.82PCh. 23 - Prob. 23.83PCh. 23 - Prob. 23.84PCh. 23 - Prob. 23.85PCh. 23 - Prob. 23.86PCh. 23 - Prob. 23.87PCh. 23 - Prob. 23.88P
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