Chapter 6, Problem 56A

(a)

Interpretation Introduction

Interpretation:The empirical formula of the given molecular model needs to be determined.

  

Concept Introduction: The molecular mass of compound is the sum of atomic mass of all the atoms present in the given chemical compound. Here the molecular formula represents the exact number of all bonded atoms in the compound.

Whereas empirical formula can be defined as the simplest positive integer ratio of all bonded atoms in the compound.

Answer to Problem 56A

The empirical formula must be ${\text{NO}}_{\text{2}}$ .

Explanation of Solution

In the given molecular model, the molecular formula must be ${\text{N}}_{\text{2}}{\text{O}}_{\text{4}}$ . Since empirical formula contains simplest positive integer of bonded atoms therefore the empirical formula must be ${\text{NO}}_{\text{2}}$ .

  

(b)

Interpretation Introduction

Interpretation:The empirical formula of the given molecular model needs to be determined.

  

Concept Introduction: The molecular mass of compound is the sum of atomic mass of all the atoms present in the given chemical compound. Here the molecular formula represents the exact number of all bonded atoms in the compound.

Whereas empirical formula can be defined as the simplest positive integer ratio of all bonded atoms in the compound.

Answer to Problem 56A

The empirical formula must be ${\text{CH}}_{\text{2}}$ .

Explanation of Solution

In the given molecular model, the molecular formula must be ${\text{C}}_{\text{2}}\text{H}$ . Since empirical formula contains simplest positive integer of bonded atoms therefore the empirical formula must be ${\text{CH}}_{\text{2}}$ .

  

(c)

Interpretation Introduction

Interpretation:The empirical formula of the given molecular model needs to be determined.

  

Concept Introduction: The molecular mass of compound is the sum of atomic mass of all the atoms present in the given chemical compound. Here the molecular formula represents the exact number of all bonded atoms in the compound.

Whereas empirical formula can be defined as the simplest positive integer ratio of all bonded atoms in the compound.

Answer to Problem 56A

The empirical formula must be ${\text{P}}_{\text{2}}{\text{O}}_{\text{5}}$ .

Explanation of Solution

In the given molecular model, the molecular formula must be ${\text{P}}_{\text{4}}{\text{O}}_{\text{10}}$ . Since empirical formula contains simplest positive integer of bonded atoms therefore the empirical formula must be ${\text{P}}_{\text{2}}{\text{O}}_{\text{5}}$ .

  

(d)

Interpretation Introduction

Interpretation:The empirical formula of the below molecular model needs to be determined.

  

Concept Introduction: The molecular mass of compound is the sum of atomic mass of all the atoms present in the given chemical compound. Here the molecular formula represents the exact number of all bonded atoms in the compound.

Whereas empirical formula can be defined as the simplest positive integer ratio of all bonded atoms in the compound.

Answer to Problem 56A

The empirical formula must be ${\text{CH}}_{\text{2}}\text{O}$ .

Explanation of Solution

In the given molecular model, the molecular formula must be ${\text{C}}_{\text{6}}{\text{H}}_{\text{12}}{\text{O}}_{\text{6}}$ . Since empirical formula contains simplest positive integer of bonded atoms therefore the empirical formula must be ${\text{CH}}_{\text{2}}\text{O}$ .