EBK FOUNDATIONS OF COLLEGE CHEMISTRY
EBK FOUNDATIONS OF COLLEGE CHEMISTRY
15th Edition
ISBN: 9781118930144
Author: Willard
Publisher: JOHN WILEY+SONS INC.
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Chapter 9, Problem 17PE

(a)

Interpretation Introduction

Interpretation:

The number moles of water are needed to react 10mol of oxygen has to be given.

Concept Introduction:

Mole ratio:

A mole ratio is a ratio between the numbers of moles of any two species involved in a chemical reaction.

Example,

In the reaction 2H2+O22H2O, the mole ratio can be written as 2molH21molO2.

(a)

Expert Solution
Check Mark

Answer to Problem 17PE

The number moles of water are needed to react 10mol of oxygen is 0.87mol.

Explanation of Solution

Given,

The number of moles of oxygen is 10mol.

The balanced reaction is,

  2C12H4Cl6+23O2+2H2O24CO2+12HCl

In the mole ratio, the coefficients of the balanced equation are used.  Therefore the mole ratio is 2molH2O23molO2.

The number of moles can be calculated as,

  10molO2(2molH2O23molO2)=0.87molH2O

The number moles of water are needed to react 10mol of oxygen is 0.87mol.

(b)

Interpretation Introduction

Interpretation:

The number of grams of HCl has to be given.

Concept Introduction:

Refer to part (a).

(b)

Expert Solution
Check Mark

Answer to Problem 17PE

The number of grams of HCl is 3325g.

Explanation of Solution

Given,

The number of moles of water is 15.2mol.

The balanced reaction is,

  2C12H4Cl6+23O2+2H2O24CO2+12HCl

In the mole ratio, the coefficients of the balanced equation are used.  Therefore the mole ratio is 12molHCl2molH2O.

The number of moles can be calculated as,

  15.2molH2O(12molHCl2molH2O)=91.2molHCl

Conversion of moles to grams:

The molar mass of HCl is 36.46g/mol.

  36.46g1mol×91.2molHCl=3325gHCl

The number of grams of HCl is 3325g.

(c)

Interpretation Introduction

Interpretation:

The number of moles of carbon dioxide are produced when 76.5gHCl produced has to be given.

Concept Introduction:

Refer to part (a).

(c)

Expert Solution
Check Mark

Answer to Problem 17PE

The number of moles of carbon dioxide is 4.19mol.

Explanation of Solution

Given,

The molecular weight of hydrochloric acid is 36.46g.

The molecular weight of carbon dioxide is 44.01g.

The given mass of hydrochloric acid is 76.5g.

The balanced reaction is,

  2C12H4Cl6+23O2+2H2O24CO2+12HCl

In the mole ratio, the coefficients of the balanced equation are used.  Therefore the mole ratio is 24molCO212molHCl.

The number of moles can be calculated as,

  76.5gHCl(1mol36.46g)(24molCO212molHCl)=4.19 molCO2

The number of moles of carbon dioxide is 4.19mol.

(d)

Interpretation Introduction

Interpretation:

The number of grams of C12H4Cl6 produced has to be given.

Concept Introduction:

Refer to part (a).

(d)

Expert Solution
Check Mark

Answer to Problem 17PE

The number of grams of C12H4Cl6 is 1645g.

Explanation of Solution

Given,

The molecular weight of C12H4Cl6 is 361g.

The molecular weight of carbon dioxide is 44.01g.

The given mass of carbon di oxide is 100.25g.

The balanced reaction is,

  2C12H4Cl6+23O2+2H2O24CO2+12HCl

In the mole ratio, the coefficients of the balanced equation are used.  Therefore the mole ratio is 24molCO22molC12H4Cl6.

The number of grams can be calculated as,

  100.25gCO2(1mol44.01gCO2)(24molCO22molC12H4Cl6)(361g1mol)=9868g

The number of grams of C12H4Cl6 is 9868g.

(e)

Interpretation Introduction

Interpretation:

The number of grams of HCl produced has to be given.

Concept Introduction:

Refer to part (a).

(e)

Expert Solution
Check Mark

Answer to Problem 17PE

The number of grams of HCl is 1515g.

Explanation of Solution

Given,

The molecular weight of C12H4Cl6 is 361g.

The molecular weight of HCl is 36.46g.

The given mass of C12H4Cl6 is 2.5kg.

The mass in kilogram has to converted to gram,

  1kg=1000g

  2.5kg=2500g

The balanced reaction is,

  2C12H4Cl6+23O2+2H2O24CO2+12HCl

In the mole ratio, the coefficients of the balanced equation are used.  Therefore the mole ratio is 12molHCl2molC12H4Cl6.

The number of grams can be calculated as,

  2500gC12H4Cl6(1mol361gC12H4Cl6)(12molHCl2molC12H4Cl6)(36.46g1mol)=1515g

The number of grams of HCl is 1515g.

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