World of Chemistry, 3rd edition
World of Chemistry, 3rd edition
3rd Edition
ISBN: 9781133109655
Author: Steven S. Zumdahl, Susan L. Zumdahl, Donald J. DeCoste
Publisher: Brooks / Cole / Cengage Learning
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Chapter 8, Problem 46A

a.

Interpretation Introduction

Interpretation: The following reaction between strong acid and strong base should be completed and balanced:

  HNO3(aq) + KOH(aq) 

Concept Introduction: The reaction between a strong base and a strong acid result in the production of an ionic salt and water. The ionic salt is composed of cation from strong base and anion from strong acid. This type of reactions is said to be neutralization reaction.

The reactions for those the number of atoms of each element in the reactant and in the product, side are equal, such reactions are said to be a balanced chemical equation.

a.

Expert Solution
Check Mark

Answer to Problem 46A

  HNO3(aq) + KOH(aq) KNO3(aq)_ + H2O(l)

Explanation of Solution

The given reaction is:

  HNO3(aq) + KOH(aq) 

The strong acid and strong base in the given reaction is HNO3 (as it gives H+ ) and KOH (as it gives OH ) respectively. Now, this reaction result in the production of an ionic salt and water. The ionic salt is composed of cation, K+ from strong base, KOH and anion, NO3- from strong acid, HNO3 . So, the formula of the salt is KNO3 . Thus, the complete reaction is:

  HNO3(aq) + KOH(aq) KNO3(aq)_ + H2O(l)

The above reaction is balanced as the number of atoms of each element is same on both sides of the reaction.

b.

Interpretation Introduction

Interpretation: The following reaction between strong acid and strong base should be completed and balanced:

  H2SO4(aq) + Ba(OH)2(aq) 

Concept Introduction: The reaction between a strong base and a strong acid result in the production of an ionic salt and water. The ionic salt is composed of cation from strong base and anion from strong acid. This type of reactions is said to be neutralization reaction.

The reactions for those the number of atoms of each element in the reactant and in the product, side are equal, such reactions are said to be a balanced chemical equation.

b.

Expert Solution
Check Mark

Answer to Problem 46A

  H2SO4(aq) + Ba(OH)2(aq) BaSO4(s)_ + 2H2O(l)

Explanation of Solution

The given reaction is:

  H2SO4(aq) + Ba(OH)2(aq) 

The strong acid and strong base in the given reaction is H2SO4 (as it gives 2 H+ ) and Ba(OH)2 (as it gives 2 OH ) respectively. Now, this reaction result in the production of an ionic salt and water. The ionic salt is composed of cation, Ba2+ from strong base, Ba(OH)2 and anion, SO42- from strong acid, H2SO4 . So, the formula of the salt is BaSO4 . Thus, the complete reaction is:

  H2SO4(aq) + Ba(OH)2(aq) BaSO4(s)_ + H2O(l)

The above reaction is unbalanced as the number of atoms of each element is not same on both sides of the reaction. So, in order to balance the reaction coefficient 2 is written before  H2O on the product side. Hence, the complete balanced reaction is:

  H2SO4(aq) + Ba(OH)2(aq) BaSO4(s)_ + 2H2O(l)

c.

Interpretation Introduction

Interpretation: The following reaction between strong acid and strong base should be completed and balanced:

  HClO4(aq) + NaOH(aq) 

Concept Introduction: The reaction between a strong base and a strong acid result in the production of an ionic salt and water. The ionic salt is composed of cation from strong base and anion from strong acid. This type of reactions is said to be neutralization reaction.

The reactions for those the number of atoms of each element in the reactant and in the product, side are equal, such reactions are said to be a balanced chemical equation.

c.

Expert Solution
Check Mark

Answer to Problem 46A

  HClO4(aq) + NaOH(aq) NaClO4(aq)_ + H2O(l)

Explanation of Solution

The given reaction is:

  HClO4(aq) + NaOH(aq) 

The strong acid and strong base in the given reaction is HClO4 (as it gives H+ ) and NaOH (as it gives OH ) respectively. Now, this reaction result in the production of an ionic salt and water. The ionic salt is composed of cation, Na+ from strong base, NaOH and anion, ClO4- from strong acid, HClO4 . So, the formula of the salt is NaClO4 . Thus, the complete reaction is:

  HClO4(aq) + NaOH(aq) NaClO4(aq)_ + H2O(l)

The above reaction is balanced as the number of atoms of each element is same on both sides of the reaction.

d.

Interpretation Introduction

Interpretation: The following reaction between strong acid and strong base should be completed and balanced:

  HCl(aq) + Ca(OH)2(aq) 

Concept Introduction: The reaction between a strong base and a strong acid result in the production of an ionic salt and water. The ionic salt is composed of cation from strong base and anion from strong acid. This type of reactions is said to be neutralization reaction.

The reactions for those the number of atoms of each element in the reactant and in the product, side are equal, such reactions are said to be a balanced chemical equation.

d.

Expert Solution
Check Mark

Answer to Problem 46A

  2HCl(aq) + Ca(OH)2(aq) CaCl2(aq)_ + 2H2O(l)

Explanation of Solution

The given reaction is:

  HCl(aq) + Ca(OH)2(aq) 

The strong acid and strong base in the given reaction is HCl (as it gives H+ ) and Ca(OH)2 (as it gives 2 OH ) respectively. Now, this reaction result in the production of an ionic salt and water. The ionic salt is composed of cation, Ca2+ from strong base, Ca(OH)2 and anion, Cl- from strong acid, HCl . So, the formula of the salt is CaCl2 . Thus, the complete reaction is:

  HCl(aq) + Ca(OH)2(aq) CaCl2(aq)_ + H2O(l)

The above reaction is unbalanced as the number of atoms of each element is not same on both sides of the reaction. So, in order to balance the reaction coefficient 2 is written before HCl on the reactant side and H2O on the product side. Hence, the complete balanced reaction is:

  2HCl(aq) + Ca(OH)2(aq) CaCl2(aq)_ + 2H2O(l)

Chapter 8 Solutions

World of Chemistry, 3rd edition

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