Chapter 1, Problem 1.61P

Interpretation Introduction

(a)

Interpretation:

Given Lewis structure is to be drawn using condensed formula.

Concept introduction:

The condensed formula indicates how the atoms should be connected in a given molecule. To arrive at a total charge of zero, each carbon should have a maximum of four bonds while each oxygen should have a maximum of two bonds and two lone pairs. A parenthesis in the condensed formula represents that the repetitive unit is attached to the previous carbon atom. The ${\text{CO}}_2$ notation denotes a carbon atom that is doubly bonded to one oxygen atom and singly bonded to another. Rings are generally now shown in their condensed formulas, but they are commonly shown in their partially condensed form.

Answer to Problem 1.61P

The condensed formula for the first Lewis structure is: ${\text{CH}}_{\text{3}}{{\text{(CH}}_{\text{2}}\text{)}}_{\text{2}}{\text{CH}}_{\text{3}}$

Explanation of Solution

The given Lewis structure is:

In the given Lewis structure, there are two ${\text{CH}}_2$ units in the middle. In this case, the similar units are shown by using the notation ${{\text{(CH}}_2)}_{\text{n}}$, where ‘n’ is the number of ${\text{CH}}_2$ units. Thus, the condensed formula for this is written as: ${\text{CH}}_{\text{3}}{{\text{(CH}}_{\text{2}}\text{)}}_{\text{2}}{\text{CH}}_{\text{3}}$

Conclusion

The condensed formula for the first Lewis structure is shown as: ${\text{CH}}_{\text{3}}{{\text{(CH}}_{\text{2}}\text{)}}_{\text{2}}{\text{CH}}_{\text{3}}$

Interpretation Introduction

(b)

Interpretation:

Given Lewis structure is to be drawn using condensed formula.

Concept introduction:

The condensed formula indicates how the atoms should be connected in a given molecule. To arrive at a total charge of zero, each carbon should have a maximum of four bonds while each oxygen should have a maximum of two bonds and two lone pairs. A parenthesis in the condensed formula represents that the repetitive unit is attached to the previous carbon atom. The ${\text{CO}}_2$ notation denotes a carbon atom that is doubly bonded to one oxygen atom and singly bonded to another. Rings are generally now shown in their condensed formulas, but they are commonly shown in their partially condensed form.

Answer to Problem 1.61P

The condensed structure for the given Lewis structure is: ${\text{CH}}_{\text{3}}{\text{CHCHCH}}_{\text{3}}$

Explanation of Solution

The given Lewis structure is:

In the structure above, there are two ${\text{CH}}_3$ groups on the terminal position. The middle carbon atoms have a double bond between them. Thus, the condensed formula for the given Lewis structure is: ${\text{CH}}_{\text{3}}{\text{CHCHCH}}_{\text{3}}$

Conclusion

The condensed formula for the given Lewis structure is shown as: ${\text{CH}}_{\text{3}}{\text{CHCHCH}}_{\text{3}}$

Interpretation Introduction

(c)

Interpretation:

Given Lewis structure is to be drawn using condensed formula.

Concept introduction:

The condensed formula indicates how the atoms should be connected in a given molecule. To arrive at a total charge of zero, each carbon should have a maximum of four bonds while each oxygen should have a maximum of two bonds and two lone pairs. A parenthesis in the condensed formula represents that the repetitive unit is attached to the previous carbon atom. The ${\text{CO}}_2$ notation denotes a carbon atom that is doubly bonded to one oxygen atom and singly bonded to another. Rings are generally now shown in their condensed formulas, but they are commonly shown in their partially condensed form. Parentheses are also used to clarify when two or three groups are attached to the same carbon atom.

Answer to Problem 1.61P

The condensed structure for the given Lewis structure is: ${{\text{(CH}}_{\text{3}}\text{)}}_2{\text{CCHCH}}_{\text{3}}$

Explanation of Solution

The given Lewis structure is:

In the structure above, there are two ${\text{CH}}_3$ groups attached directly to one of the doubly bonded carbon atom. Thus, a parenthesis has to be used to represent the two ${\text{CH}}_3$ groups attached to one of the doubly bonded carbon atoms. The other doubly bonded carbon atom has one ${\text{CH}}_3$ group attached to it. Thus, the condensed formula for the given Lewis structure is: ${{\text{(CH}}_{\text{3}}\text{)}}_2{\text{CCHCH}}_{\text{3}}$

Conclusion

The condensed formula for the given Lewis structure is shown as: ${{\text{(CH}}_{\text{3}}\text{)}}_2{\text{CCHCH}}_{\text{3}}$

Interpretation Introduction

(d)

Interpretation:

Given Lewis structure is to be drawn using condensed formula.

Concept introduction:

The condensed formula indicates how the atoms should be connected in a given molecule. To arrive at a total charge of zero, each carbon should have a maximum of four bonds while each oxygen should have a maximum of two bonds and two lone pairs. A parenthesis in the condensed formula represents that the repetitive unit is attached to the previous carbon atom. The ${\text{CO}}_2$ notation denotes a carbon atom that is doubly bonded to one oxygen atom and singly bonded to another. Rings are generally now shown in their condensed formulas, but they are commonly shown in their partially condensed form. Parentheses are also used to clarify when two or three groups are attached to the same carbon atom.

Answer to Problem 1.61P

The condensed structure for the given Lewis structure is: ${{\text{(CH}}_{\text{3}}\text{)}}_2{\text{CCHCH}}_{\text{3}}$

Explanation of Solution

The given Lewis structure is:

The structure above is a five carbon ring structure. Rings are generally now shown in their condensed formulas, but they are commonly shown in their partially condensed form. Thus, the condensed formula for the given Lewis structure is:

Conclusion

The condensed formula for the given Lewis structure is shown in Figure 1.

Interpretation Introduction

(e)

Interpretation:

Given Lewis structure is to be drawn using condensed formula.

Concept introduction:

The condensed formula indicates how the atoms should be connected in a given molecule. To arrive at a total charge of zero, each carbon should have a maximum of four bonds while each oxygen should have a maximum of two bonds and two lone pairs. A parenthesis in the condensed formula represents that the repetitive unit is attached to the previous carbon atom. The ${\text{CO}}_2$ notation denotes a carbon atom that is doubly bonded to one oxygen atom and singly bonded to another. Rings are generally now shown in their condensed formulas, but they are commonly shown in their partially condensed form. Parentheses are also used to clarify when two or three groups are attached to the same carbon atom.

Answer to Problem 1.61P

The condensed structure for the given Lewis structure is:

Explanation of Solution

The given Lewis structure is:

In the structure above, there is a five membered ring on the left side and a branch of three carbon atoms. Rings are generally now shown in their condensed formulas, but they are commonly shown in their partially condensed form. On one of the carbon atoms in the five membered ring, two ${\text{CH}}_2$ units are attached with the terminal ${\text{CH}}_3$ group.

Thus, the condensed formula for the given Lewis structure is:

Conclusion

The condensed formula for the given Lewis structure is shown in Figure 2.

Interpretation Introduction

(f)

Interpretation:

Given Lewis structure is to be drawn using condensed formula.

Concept introduction:

The condensed formula indicates how the atoms should be connected in a given molecule. To arrive at a total charge of zero, each carbon should have a maximum of four bonds while each oxygen should have a maximum of two bonds and two lone pairs. A parenthesis in the condensed formula represents that the repetitive unit is attached to the previous carbon atom. The ${\text{CO}}_2$ notation denotes a carbon atom that is doubly bonded to one oxygen atom and singly bonded to another. Rings are generally now shown in their condensed formulas, but they are commonly shown in their partially condensed form. Parentheses are also used to clarify when two or three groups are attached to the same carbon atom.

Answer to Problem 1.61P

The condensed structure for the given Lewis structure is: ${\text{CH}}_{\text{3}}{\text{OCHCH}}_{\text{3}}$

Explanation of Solution

The given Lewis structure is:

In the structure above, a ${\text{CH}}_3$ unit is attached to the oxygen atom on one side. On the other side of the oxygen, there is an ethyl fragment, ${\text{-CH}}_2{\text{CH}}_3$. Thus, the condensed formula for the given Lewis structure is: ${\text{CH}}_{\text{3}}{\text{OCHCH}}_{\text{3}}$

Conclusion

The condensed formula for the given Lewis structure is ${\text{CH}}_{\text{3}}{\text{OCHCH}}_{\text{3}}$