Chapter 13, Problem 13.40QP

(a)

Interpretation Introduction

To determine: The conversion of given carbon-skeleton structure to molecular formula.

Interpretation: The given carbon-skeleton structure to molecular formula is to be converted.

Concept introduction: Carbon-skeleton structure is used to describe how the carbon atoms are arranged in the form of chain and form the essential structure of the compound and the molecular formula is the number of atoms present in the structure of the compound. The general formula of alkane is,

$\text{Molecular}\text{formula}={\text{C}}_{\text{n}}{\text{H}}_{\text{2n+2}}$

Answer to Problem 13.40QP

The molecular formula for the given carbon skeleton structure is ${\text{C}}_7{\text{H}}_{16}$.

Explanation of Solution

The given carbon-skeleton structure is,

Figure 1

In the given compound, there are $7$ carbon atoms and $16$ hydrogen atoms. The general formula of alkane is ${\text{C}}_{\text{n}}{\text{H}}_{\text{2n+2}}$. The number of carbon atoms and the number of hydrogen are calculated as,

$\begin{array}{c}\text{Molecular}\text{formula}={\text{C}}_{\text{n}}{\text{H}}_{\text{2n+2}}\\ ={\text{C}}_7{\text{H}}_{\text{2}\times 7+\text{2}}\\ ={\text{C}}_7{\text{H}}_{16}\end{array}$

Hence, the molecular formula of the structure is ${\text{C}}_7{\text{H}}_{16}$.

(b)

Interpretation Introduction

To determine: The conversion of given carbon-skeleton structure to molecular formula.

Interpretation: The given carbon-skeleton structure to molecular formula is to be converted.

Concept introduction: Carbon-skeleton structure is used to describe how the carbon atoms are arranged in the form of chain and form the essential structure of the compound and the molecular formula is the number of atoms present in the structure of the compound. The general formula of alkane is,

$\text{Molecular}\text{formula}={\text{C}}_{\text{n}}{\text{H}}_{\text{2n+2}}$

Answer to Problem 13.40QP

The molecular formula for the given carbon skeleton structure is ${\text{C}}_7{\text{H}}_{\text{14}}$.

Explanation of Solution

The given carbon-skeleton structure is,

Figure 2

In the given cyclic compound, there are $7$ carbon atoms and $14$ hydrogen atoms. The general formula of cyclic alkane is ${\text{C}}_{\text{n}}{\text{H}}_{\text{2n}}$. The number of carbon atoms and the number of hydrogen are calculated as,

$\begin{array}{c}\text{Molecular}\text{formula}={\text{C}}_{\text{n}}{\text{H}}_{\text{2n}}\\ ={\text{C}}_7{\text{H}}_{\text{2}\times 7}\\ ={\text{C}}_7{\text{H}}_{\text{14}}\end{array}$

Hence, the molecular formula of the structure is ${\text{C}}_7{\text{H}}_{\text{14}}$.

(c)

Interpretation Introduction

To determine: The conversion of given carbon-skeleton structure to molecular formula.

Interpretation: The given carbon-skeleton structure to molecular formula is to be converted.

Concept introduction: Carbon-skeleton structure is used to describe how the carbon atoms are arranged in the form of chain and form the essential structure of the compound and the molecular formula is the number of atoms present in the structure of the compound. The general formula of alkane is,

$\text{Molecular}\text{formula}={\text{C}}_{\text{n}}{\text{H}}_{\text{2n+2}}$

Answer to Problem 13.40QP

The molecular formula for the given carbon skeleton structure is ${\text{C}}_7{\text{H}}_{\text{16}}$.

Explanation of Solution

The given carbon-skeleton structure is,

Figure 3

In the given compound, there are $7$ carbon atoms and $16$ hydrogen atoms. The general formula of alkane is ${\text{C}}_{\text{n}}{\text{H}}_{\text{2n+2}}$. The number of carbon atoms and the number of hydrogen are calculated as,

$\begin{array}{c}\text{Molecular}\text{formula}={\text{C}}_{\text{n}}{\text{H}}_{\text{2n+2}}\\ ={\text{C}}_7{\text{H}}_{\text{2}\times 7+\text{2}}\\ ={\text{C}}_7{\text{H}}_{16}\end{array}$

Hence, the molecular formula of the structure is ${\text{C}}_7{\text{H}}_{\text{14}}$.

(d)

Interpretation Introduction

To determine: The conversion of given carbon-skeleton structure to molecular formula.

Interpretation: The given carbon-skeleton structure to molecular formula is to be converted.

Concept introduction: Carbon-skeleton structure is used to describe how the carbon atoms are arranged in the form of chain and form the essential structure of the compound and the molecular formula is the number of atoms present in the structure of the compound. The general formula of alkane is,

$\text{Molecular}\text{formula}={\text{C}}_{\text{n}}{\text{H}}_{\text{2n+2}}$

Answer to Problem 13.40QP

The molecular formula for the given carbon skeleton structure is ${\text{C}}_{\text{8}}{\text{H}}_{\text{18}}$.

Explanation of Solution

The given carbon-skeleton structure is,

Figure 4

In the given compound, there are $8$ carbon atoms and $18$ hydrogen atoms. The general formula of alkane is ${\text{C}}_{\text{n}}{\text{H}}_{\text{2n+2}}$. The number of carbon atoms and the number of hydrogen are calculated as,

$\begin{array}{c}\text{Molecular}\text{formula}={\text{C}}_{\text{n}}{\text{H}}_{\text{2n+2}}\\ ={\text{C}}_8{\text{H}}_{\text{2}\times \text{8}+\text{2}}\\ ={\text{C}}_{\text{8}}{\text{H}}_{\text{18}}\end{array}$

Hence, the molecular formula of the structure is ${\text{C}}_{\text{8}}{\text{H}}_{\text{18}}$.

(e)

Interpretation Introduction

To determine: The conversion of given carbon-skeleton structure to molecular formula.

Interpretation: The given carbon-skeleton structure to molecular formula is to be converted.

Concept introduction: Carbon-skeleton structure is used to describe how the carbon atoms are arranged in the form of chain and form the essential structure of the compound and the molecular formula is the number of atoms present in the structure of the compound. The general formula of alkane is,

$\text{Molecular}\text{formula}={\text{C}}_{\text{n}}{\text{H}}_{\text{2n+2}}$

Answer to Problem 13.40QP

The molecular formula for the given carbon skeleton structure is ${\text{C}}_{\text{8}}{\text{H}}_{\text{18}}$.

Explanation of Solution

The given carbon-skeleton structure is,

Figure 5

In the given compound, there are $8$ carbon atoms and $18$ hydrogen atoms. The general formula of alkane is ${\text{C}}_{\text{n}}{\text{H}}_{\text{2n+2}}$. The number of carbon atoms and the number of hydrogen are calculated as,

$\begin{array}{c}\text{Molecular}\text{formula}={\text{C}}_{\text{n}}{\text{H}}_{\text{2n+2}}\\ ={\text{C}}_8{\text{H}}_{\text{2}\times \text{8}+\text{2}}\\ ={\text{C}}_{\text{8}}{\text{H}}_{\text{18}}\end{array}$

Hence, the molecular formula of the structure is ${\text{C}}_{\text{8}}{\text{H}}_{\text{18}}$.

(f)

Interpretation Introduction

To determine: The conversion of given carbon-skeleton structure to molecular formula.

Interpretation: The given carbon-skeleton structure to molecular formula is to be converted.

Concept introduction: Carbon-skeleton structure is used to describe how the carbon atoms are arranged in the form of chain and form the essential structure of the compound and the molecular formula is the number of atoms present in the structure of the compound. The general formula of alkane is,

$\text{Molecular}\text{formula}={\text{C}}_{\text{n}}{\text{H}}_{\text{2n+2}}$

Answer to Problem 13.40QP

The molecular formula for the given carbon skeleton structure is ${\text{C}}_7{\text{H}}_{\text{16}}$.

Explanation of Solution

The given carbon-skeleton structure is,

Figure 6

In the given compound, there are $7$ carbon atoms and $16$ hydrogen atoms. The general formula of alkane is ${\text{C}}_{\text{n}}{\text{H}}_{\text{2n+2}}$. The number of carbon atoms and the number of hydrogen are calculated as,

$\begin{array}{c}\text{Molecular}\text{formula}={\text{C}}_{\text{n}}{\text{H}}_{\text{2n+2}}\\ ={\text{C}}_7{\text{H}}_{\text{2}\times 7+\text{2}}\\ ={\text{C}}_7{\text{H}}_{\text{16}}\end{array}$

Hence, the molecular formula of the structure is ${\text{C}}_7{\text{H}}_{\text{16}}$.

Conclusion

1. a. The molecular formula for the given carbon skeleton structure is ${\text{C}}_7{\text{H}}_{16}$.
2. b. The molecular formula for the given carbon skeleton structure is ${\text{C}}_7{\text{H}}_{\text{14}}$.
3. c. The molecular formula for the given carbon skeleton structure is ${\text{C}}_7{\text{H}}_{\text{16}}$.
4. d. The molecular formula for the given carbon skeleton structure is ${\text{C}}_{\text{8}}{\text{H}}_{\text{18}}$.
5. e. The molecular formula for the given carbon skeleton structure is ${\text{C}}_{\text{8}}{\text{H}}_{\text{18}}$.
6. f. The molecular formula for the given carbon skeleton structure is ${\text{C}}_7{\text{H}}_{\text{16}}$.