Introductory Chemistry: A Foundation
Introductory Chemistry: A Foundation
9th Edition
ISBN: 9781337399425
Author: Steven S. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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Chapter 6, Problem 44QAP
Interpretation Introduction

(a)

Interpretation:

A balanced equation of the given reaction should be determined.

Concept Introduction:

In a balanced chemical reaction, the number of similar type of elements on both sides of the reaction is equal. To balance an unbalanced equation, the coefficients that present before the compounds are changed but not the subscripts in the formulas.

Expert Solution
Check Mark

Answer to Problem 44QAP

Ba(NO3)2(aq)+Na2CrO4(aq)BaCrO4(s)+2NaNO3(aq).

Explanation of Solution

The following unbalanced equation is given:

Ba(NO3)2(aq)+NaCrO4(aq)BaCrO4(s)+NaNO3(aq)

There is no clear choice for the most complicated molecule. We arbitrarily start with the elements of BaNO3 To balance oxygen, we place a coefficient of 2 before NaNO3. We have got a balanced equation.

Ba(NO3)2(aq)+Na2CrO4(aq)BaCrO4(s)+2NaNO3(aq).

Interpretation Introduction

(b)

Interpretation:

A balanced equation of the given reaction should be determined.

Concept Introduction:

In a balanced chemical reaction, the number of similar type of elements on both sides of the reaction is equal. To balance an unbalanced equation, the coefficients that present before the compounds are changed but not the subscripts in the formulas.

Expert Solution
Check Mark

Answer to Problem 44QAP

PbCl2(aq)+K2SO4(aq)PbSO4(s)+2KCl(aq).

Explanation of Solution

The following unbalanced equation is given:

PbCl2(aq)+K2SO4(aq)PbSO4(s)+KCl(aq)

There is no clear choice for the most complicated molecule. We arbitrarily start with the elements of PbCl2 To balance chlorine, we place a coefficient of 2 before KCl. We have got a balanced equation.

PbCl2(aq)+K2SO4(aq)PbSO4(s)+2KCl(aq).

Interpretation Introduction

(c)

Interpretation:

A balanced equation of the given reaction should be determined.

Concept Introduction:

In a balanced chemical reaction, the number of similar type of elements on both sides of the reaction is equal. To balance an unbalanced equation, the coefficients that present before the compounds are changed but not the subscripts in the formulas.

Expert Solution
Check Mark

Answer to Problem 44QAP

C2H5OH(l)+3O2(g)2CO2(g)+3H2O(l).

Explanation of Solution

The following unbalanced equation is given:

C2H2OH(l)+O2(g)CO2(g)+H2O(l)

The most complicated molecule is C2 H5 OH because it contains the most elements (three). To balance C, we place a coefficient ot 2 before CO2.

C2H5OH(l)+O2(g)2CO2(g)+H2O(l)

To balance H, we place a coefficient of 3 before H2 O.

C2H5OH(l)+O2(g)2CO2(g)+3H2O(l)

Finally, to balance O, we place a coefficient of 3 before O2.

C2H5OH(l)+3O2(g)2CO2(g)+3H2O(l)

We now have a balanced equation.

Interpretation Introduction

(d)

Interpretation:

A balanced equation of the given reaction should be determined.

Concept Introduction:

In a balanced chemical reaction, the number of similar type of elements on both sides of the reaction is equal. To balance an unbalanced equation, the coefficients that present before the compounds are changed but not the subscripts in the formulas.

Expert Solution
Check Mark

Answer to Problem 44QAP

CaC2(s)+2H2O(l)Ca(OH)2(s)+C2H2(g).

Explanation of Solution

The following unbalanced equation is given:

CaC2(s)+H2O(l)Ca(OH)2(s)+C2H2(g)

The most complicated molecule is Ca(OH)2 because it contains the most elements (three). We start with hydrogen. To balance H we place a coefficient of 2 before H2 O. We now have a balanced equation.

CaC2(s)+2H2O(l)Ca(OH)2(s)+C2H2(g).

Interpretation Introduction

(e)

Interpretation:

A balanced equation of the given reaction should be determined.

Concept Introduction:

In a balanced chemical reaction, the number of similar type of elements on both sides of the reaction is equal. To balance an unbalanced equation, the coefficients that present before the compounds are changed but not the subscripts in the formulas.

Expert Solution
Check Mark

Answer to Problem 44QAP

Sr(s)+2HNO3(aq)Sr(NO3)2(aq)+H2(g).

Explanation of Solution

The following unbalanced equation is given:

Sr(s)+HNO3(aq)SrNO3(aq)+H2(g)

There is no clear choice for the most complicated molecule. We arbitrarily start with the elements of SrNO3 To balance oxygen we, place a coefficient ot 2 before HNO3. We have got a balanced equation.

Sr(s)+2HNO3(aq)Sr(NO3)2(aq)+H2(g).

(f)
Interpretation Introduction

Interpretation:

A balanced equation of the given reaction should be determined.

Concept Introduction:

In a balanced chemical reaction, the number of similar type of elements on both sides of the reaction is equal. To balance an unbalanced equation, the coefficients that present before the compounds are changed but not the subscripts in the formulas.

(f)
Expert Solution
Check Mark

Answer to Problem 44QAP

BaO2(s)+H2SO4(aq)BaSO4(s)+H2O2(aq).

Explanation of Solution

The following equation is given:

BaO2(s)+H2SO4(aq)BaSO4(s)+H2O2(aq)

It can be seen that all the elements are already balanced. Therefore, we have got a balanced equation.

BaO2(s)+H2SO4(aq)BaSO4(s)+H2O2(aq).

Interpretation Introduction

(g)

Interpretation:

A balanced equation of the given reaction should be determined.

Concept Introduction:

In a balanced chemical reaction, the number of similar type of elements on both sides of the reaction is equal. To balance an unbalanced equation, the coefficients that present before the compounds are changed but not the subscripts in the formulas.

Expert Solution
Check Mark

Answer to Problem 44QAP

2AsI3(s)2As(s)+3I2(s).

Explanation of Solution

The following unbalanced equation is given:

AsI3(s)As(s)+I2(s)

The most complicated molecule is AsI3. We start with Iodine. To balance Iodine, we place a coefficient ot 3 before I2 and 2 before AsI3

2AsI3(s)As(s)+3I2(s)

To balance As, we place a coefficient of 2 before As.

2AsI3(s)2As(s)+3I2(s)

We now have a balanced equation.

(h)
Interpretation Introduction

Interpretation:

A balanced equation of the given reaction should be determined.

Concept Introduction:

In a balanced chemical reaction, the number of similar type of elements on both sides of the reaction is equal. To balance an unbalanced equation, the coefficients that present before the compounds are changed but not the subscripts in the formulas.

(h)
Expert Solution
Check Mark

Answer to Problem 44QAP

2CuSO4(aq)+4KI(s)2CuI(s)+I2(s)+2K2SO4(aq).

Explanation of Solution

The following unbalanced equation is given:

CuSO4(aq)+KI(s)CuI(s)+I2(s)+K2SO4(aq)

There is no clear choice for the most complicated molecule. We arbitrarily start with the elements of K2 SO4 To balance K, we place a coefficient of 2 before KI.

CuSO4(aq)+2KI(s)CuI(s)+I2(s)+K2SO4(aq)

We can balance the equation by giving I2 a cofficient of ½.

CuSO4(aq)+KI(s)CuI(s)+12I2(s)+K2SO4(aq)

The coffecient should be an integer, therefore we should multiply the equation by 2. We have got a balanced equation.

2CuSO4(aq)+4KI(s)2CuI(s)+I2(s)+2K2SO4(aq).

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Chapter 6 Solutions

Introductory Chemistry: A Foundation

Ch. 6 - Prob. 6ALQCh. 6 - Changing the subscripts of chemicals can...Ch. 6 - Table 6.1 lists some clues that a chemical...Ch. 6 - Use molecular-level drawings to show the...Ch. 6 - It is stated in Section 6.3 of the text that to...Ch. 6 - Prob. 11ALQCh. 6 - Consider the generic chemical equationaA+bBcC+dD...Ch. 6 - Prob. 13ALQCh. 6 - Which of the following correctly describes the...Ch. 6 - Which of the following correctly balances the...Ch. 6 - The reaction of an element X() with element Y() is...Ch. 6 - Prob. 1QAPCh. 6 - Prob. 2QAPCh. 6 - Although these days many people have...Ch. 6 - Prob. 4QAPCh. 6 - You have probably had the unpleasant experience of...Ch. 6 - If you’ve ever left bread in a toaster too long,...Ch. 6 - What are the substances to theleftof the arrow in...Ch. 6 - Prob. 8QAPCh. 6 - In a chemical reaction, the total number of atoms...Ch. 6 - Prob. 10QAPCh. 6 - Prob. 11QAPCh. 6 - The notation “(l)” after a substance’s formula...Ch. 6 - A common experiment to determine the relative...Ch. 6 - A common lecture demonstration called “elephant’s...Ch. 6 - If a sample of pure hydrogen gas is ignited very...Ch. 6 - Liquid hydrazine, has been used as a fuel for...Ch. 6 - If electricity of sufficient voltage is passed...Ch. 6 - Silver oxide may be decomposed by strong heating...Ch. 6 - Elemental boron is produced in one industrial...Ch. 6 - Many over-the-counter antacid tablets are now...Ch. 6 - Phosphorus trichloride is used in the manufacture...Ch. 6 - Pure silicon, which is needed in the manufacturing...Ch. 6 - Nitrous oxide gas (systematic name: dinitrogen...Ch. 6 - Solid zinc is added to an aqueous solution...Ch. 6 - Acetylene gas (C2H2) is often used by plumbers,...Ch. 6 - The burning of high-sulfur fuels has been shown to...Ch. 6 - The Group 2 metals (Ba, Ca, Sr) can be produced in...Ch. 6 - There are fears that the protective ozone layer...Ch. 6 - Carbon tetrachloride was widely used for many...Ch. 6 - When elemental phosphorus, P4, burns in oxygen...Ch. 6 - Calcium oxide is sometimes very challenging to...Ch. 6 - Prob. 32QAPCh. 6 - The element tin often occurs in nature as the...Ch. 6 - Nitric acid, HNO3 , can be produced by reacting...Ch. 6 - When balancing chemical equations, beginning...Ch. 6 - The “Chemistry in Focus” segment The Beetle That...Ch. 6 - Balance each of the following chemical equations....Ch. 6 - Balance the equations for the reaction of...Ch. 6 - Balance each of the following chemical equations....Ch. 6 - Balance each of the following chemical equations....Ch. 6 - Balance each of the following chemical equations....Ch. 6 - Prob. 42QAPCh. 6 - Prob. 43QAPCh. 6 - Prob. 44QAPCh. 6 - Acetylene gas, C2H2 , is used in welding because...Ch. 6 - When balancing a chemical equation, which of the...Ch. 6 - Crude gunpowders often contain a mixture of...Ch. 6 - The following demonstration takes place in a...Ch. 6 - Methanol (methyl alcohol), CH3OH , is a very...Ch. 6 - The Hall process is an important method by which...Ch. 6 - Iron oxide ores, commonly a mixture of FeO and...Ch. 6 - True or false? Coefficients can be fractions when...Ch. 6 - When steel wool (iron) is heated in pure oxygen...Ch. 6 - One method of producing hydrogen peroxide is to...Ch. 6 - When elemental boron, B, is burned in oxygen gas,...Ch. 6 - A common experiment in introductory chemistry...Ch. 6 - A common demonstration in chemistry courses...Ch. 6 - Write a balanced chemical equation for the...Ch. 6 - Prob. 59APCh. 6 - Prob. 60APCh. 6 - If you had a “sour stomach,” you might try an...Ch. 6 - When iron wire is heated in the presence of...Ch. 6 - When finely divided solid sodium is dropped into a...Ch. 6 - If aqueous solutions of potassium chromate and...Ch. 6 - When hydrogen sulfide, H2S , gas is bubbled...Ch. 6 - If an electric current is passed through aqueous...Ch. 6 - When a strip of magnesium metal is heated in...Ch. 6 - Prob. 68APCh. 6 - When solid red phosphorus, is burned in air, the...Ch. 6 - When copper (II) oxide is boiled in an aqueous...Ch. 6 - When lead(II) sulfide is heated lo high...Ch. 6 - Which of the following statements about chemical...Ch. 6 - Prob. 73APCh. 6 - Prob. 74APCh. 6 - Prob. 75APCh. 6 - Using different shapes to distinguish between...Ch. 6 - Which of the following statements about chemical...Ch. 6 - Prob. 78CPCh. 6 - Balance the following chemical equations....
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