(a) Interpretation: Whether the given general formula is used to characterize (1) an alkane, (2) an alkene with one C = C bond, and (3) an alkyne with one C ≡ C bond is to be predicted. Concept introduction: Alkanes are the saturated hydrocarbons which only contain single carbon-carbon bonds while alkenes are the unsaturated hydrocarbons which contain one or more double bonds. One or more triple bonds are present in case of alkynes .

Question

6. Match each of the lettered items in the column on the left with the most appropriate numbered item(s) in the column on the right. Some of the numbered items may be used more than once and some not at all. a. Z = 37 1. b. Mn 2. C. Pr element in period 5 and group 14 element in period 5 and group 15 d. S e. [Rn] 7s¹ f. d block metal 3. highest metallic character of all the elements 4. paramagnetic with 5 unpaired electrons 5. 4f36s2 6. isoelectronic with Ca²+ cation 7. an alkaline metal 8. an f-block element

Answer 1

Question

Definition Definition Molecules that have multiple bonds between their carbon atoms. Alkenes are hydrocarbons with a double bond between two adjacent carbon atoms (R 2 C=CR 2 ), whereas alkynes are hydrocarbons with a triple bond between two adjacent carbon atoms R-C=C-R . These two groups are known as unsaturated hydrocarbons. They have fewer hydrogen atoms when compared with alkanes with same number of carbon atoms. The general molecular formula for an unsaturated hydrocarbon can be represented as C n H 2n +2 .

Chapter 12, Problem 12.83E

Interpretation Introduction

(a)

Interpretation:

Whether the given general formula is used to characterize (1) an alkane, (2) an alkene with one C=C bond, and (3) an alkyne with one C≡C bond is to be predicted.

Concept introduction:

Alkanes are the saturated hydrocarbons which only contain single carbon-carbon bonds while alkenes are the unsaturated hydrocarbons which contain one or more double bonds. One or more triple bonds are present in case of alkynes.

Interpretation Introduction

(b)

Interpretation:

Whether the given general formula is used to characterize (1) an alkane, (2) an alkene with one C=C bond, and (3) an alkyne with one C≡C bond is to be predicted.

Concept introduction:

Alkanes are the saturated hydrocarbons which only contain single carbon-carbon bonds while alkenes are the unsaturated hydrocarbons which contain one or more double bonds. One or more triple bonds are present in case of alkynes.

Interpretation Introduction

(c)

Interpretation:

Whether the given general formula is used to characterize (1) an alkane, (2) an alkene with one C=C bond, and (3) an alkyne with one C≡C bond is to be predicted.

Concept introduction:

Alkanes are the saturated hydrocarbons which only contain single carbon-carbon bonds while alkenes are the unsaturated hydrocarbons which contain one or more double bonds. One or more triple bonds are present in case of alkynes.

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6. Match each of the lettered items in the column on the left with the most appropriate numbered item(s) in the column on the right. Some of the numbered items may be used more than once and some not at all. a. Z = 37 1. b. Mn 2. C. Pr element in period 5 and group 14 element in period 5 and group 15 d. S e. [Rn] 7s¹ f. d block metal 3. highest metallic character of all the elements 4. paramagnetic with 5 unpaired electrons 5. 4f36s2 6. isoelectronic with Ca²+ cation 7. an alkaline metal 8. an f-block element

Draw all formal charges on the structures below as is and draw 1 resonance structure that is more stable.

Part II. xiao isolated a compound TAD (Ca H 10 N₂) from tobacco and obtained its IR spectrum. Xiao proposed a chemical structure shown below: % Transmittance 4000 3500 3000 2500 2000 Wavenumber (cm-1) 1500 1000 (a) Explain why her proposed structure is inconsistent with the IR spectrum obtained (b) TAD exists as a tautomer of the structure xiao proposed. Draw the structure and explain why it is more compatible with the obtained spectrum. (C) what is the possible source for the fairly intense signal at 1621cm1

Answer 2

Question

Definition Definition Molecules that have multiple bonds between their carbon atoms. Alkenes are hydrocarbons with a double bond between two adjacent carbon atoms (R 2 C=CR 2 ), whereas alkynes are hydrocarbons with a triple bond between two adjacent carbon atoms R-C=C-R . These two groups are known as unsaturated hydrocarbons. They have fewer hydrogen atoms when compared with alkanes with same number of carbon atoms. The general molecular formula for an unsaturated hydrocarbon can be represented as C n H 2n +2 .

Chapter 12, Problem 12.83E

Interpretation Introduction

(a)

Interpretation:

Whether the given general formula is used to characterize (1) an alkane, (2) an alkene with one C=C bond, and (3) an alkyne with one C≡C bond is to be predicted.

Concept introduction:

Alkanes are the saturated hydrocarbons which only contain single carbon-carbon bonds while alkenes are the unsaturated hydrocarbons which contain one or more double bonds. One or more triple bonds are present in case of alkynes.

Interpretation Introduction

(b)

Interpretation:

Whether the given general formula is used to characterize (1) an alkane, (2) an alkene with one C=C bond, and (3) an alkyne with one C≡C bond is to be predicted.

Concept introduction:

Alkanes are the saturated hydrocarbons which only contain single carbon-carbon bonds while alkenes are the unsaturated hydrocarbons which contain one or more double bonds. One or more triple bonds are present in case of alkynes.

Interpretation Introduction

(c)

Interpretation:

Whether the given general formula is used to characterize (1) an alkane, (2) an alkene with one C=C bond, and (3) an alkyne with one C≡C bond is to be predicted.

Concept introduction:

Alkanes are the saturated hydrocarbons which only contain single carbon-carbon bonds while alkenes are the unsaturated hydrocarbons which contain one or more double bonds. One or more triple bonds are present in case of alkynes.

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Answer 3

Question

Definition Definition Molecules that have multiple bonds between their carbon atoms. Alkenes are hydrocarbons with a double bond between two adjacent carbon atoms (R 2 C=CR 2 ), whereas alkynes are hydrocarbons with a triple bond between two adjacent carbon atoms R-C=C-R . These two groups are known as unsaturated hydrocarbons. They have fewer hydrogen atoms when compared with alkanes with same number of carbon atoms. The general molecular formula for an unsaturated hydrocarbon can be represented as C n H 2n +2 .

Chapter 12, Problem 12.83E

Interpretation Introduction

(a)

Interpretation:

Whether the given general formula is used to characterize (1) an alkane, (2) an alkene with one C=C bond, and (3) an alkyne with one C≡C bond is to be predicted.

Concept introduction:

Alkanes are the saturated hydrocarbons which only contain single carbon-carbon bonds while alkenes are the unsaturated hydrocarbons which contain one or more double bonds. One or more triple bonds are present in case of alkynes.

Interpretation Introduction

(b)

Interpretation:

Whether the given general formula is used to characterize (1) an alkane, (2) an alkene with one C=C bond, and (3) an alkyne with one C≡C bond is to be predicted.

Concept introduction:

Alkanes are the saturated hydrocarbons which only contain single carbon-carbon bonds while alkenes are the unsaturated hydrocarbons which contain one or more double bonds. One or more triple bonds are present in case of alkynes.

Interpretation Introduction

(c)

Interpretation:

Whether the given general formula is used to characterize (1) an alkane, (2) an alkene with one C=C bond, and (3) an alkyne with one C≡C bond is to be predicted.

Concept introduction:

Alkanes are the saturated hydrocarbons which only contain single carbon-carbon bonds while alkenes are the unsaturated hydrocarbons which contain one or more double bonds. One or more triple bonds are present in case of alkynes.

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Answer 4

Question

Definition Definition Molecules that have multiple bonds between their carbon atoms. Alkenes are hydrocarbons with a double bond between two adjacent carbon atoms (R 2 C=CR 2 ), whereas alkynes are hydrocarbons with a triple bond between two adjacent carbon atoms R-C=C-R . These two groups are known as unsaturated hydrocarbons. They have fewer hydrogen atoms when compared with alkanes with same number of carbon atoms. The general molecular formula for an unsaturated hydrocarbon can be represented as C n H 2n +2 .

Chapter 12, Problem 12.83E

Interpretation Introduction

(a)

Interpretation:

Whether the given general formula is used to characterize (1) an alkane, (2) an alkene with one C=C bond, and (3) an alkyne with one C≡C bond is to be predicted.

Concept introduction:

Alkanes are the saturated hydrocarbons which only contain single carbon-carbon bonds while alkenes are the unsaturated hydrocarbons which contain one or more double bonds. One or more triple bonds are present in case of alkynes.

Interpretation Introduction

(b)

Interpretation:

Whether the given general formula is used to characterize (1) an alkane, (2) an alkene with one C=C bond, and (3) an alkyne with one C≡C bond is to be predicted.

Concept introduction:

Alkanes are the saturated hydrocarbons which only contain single carbon-carbon bonds while alkenes are the unsaturated hydrocarbons which contain one or more double bonds. One or more triple bonds are present in case of alkynes.

Interpretation Introduction

(c)

Interpretation:

Whether the given general formula is used to characterize (1) an alkane, (2) an alkene with one C=C bond, and (3) an alkyne with one C≡C bond is to be predicted.

Concept introduction:

Alkanes are the saturated hydrocarbons which only contain single carbon-carbon bonds while alkenes are the unsaturated hydrocarbons which contain one or more double bonds. One or more triple bonds are present in case of alkynes.

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Answer 5

Chapter 12, Problem 12.83E

Interpretation Introduction

(a)

Interpretation:

Whether the given general formula is used to characterize (1) an alkane, (2) an alkene with one C=C bond, and (3) an alkyne with one C≡C bond is to be predicted.

Concept introduction:

Alkanes are the saturated hydrocarbons which only contain single carbon-carbon bonds while alkenes are the unsaturated hydrocarbons which contain one or more double bonds. One or more triple bonds are present in case of alkynes.

Interpretation Introduction

(b)

Interpretation:

Whether the given general formula is used to characterize (1) an alkane, (2) an alkene with one C=C bond, and (3) an alkyne with one C≡C bond is to be predicted.

Concept introduction:

Alkanes are the saturated hydrocarbons which only contain single carbon-carbon bonds while alkenes are the unsaturated hydrocarbons which contain one or more double bonds. One or more triple bonds are present in case of alkynes.

Interpretation Introduction

(c)

Interpretation:

Whether the given general formula is used to characterize (1) an alkane, (2) an alkene with one C=C bond, and (3) an alkyne with one C≡C bond is to be predicted.

Concept introduction:

Alkanes are the saturated hydrocarbons which only contain single carbon-carbon bonds while alkenes are the unsaturated hydrocarbons which contain one or more double bonds. One or more triple bonds are present in case of alkynes.

Answer 6

Chapter 12, Problem 12.83E

Interpretation Introduction

(a)

Interpretation:

Whether the given general formula is used to characterize (1) an alkane, (2) an alkene with one C=C bond, and (3) an alkyne with one C≡C bond is to be predicted.

Concept introduction:

Alkanes are the saturated hydrocarbons which only contain single carbon-carbon bonds while alkenes are the unsaturated hydrocarbons which contain one or more double bonds. One or more triple bonds are present in case of alkynes.

Answer 7

Chapter 12, Problem 12.83E

Interpretation Introduction

(a)

Interpretation:

Whether the given general formula is used to characterize (1) an alkane, (2) an alkene with one C=C bond, and (3) an alkyne with one C≡C bond is to be predicted.

Concept introduction:

Alkanes are the saturated hydrocarbons which only contain single carbon-carbon bonds while alkenes are the unsaturated hydrocarbons which contain one or more double bonds. One or more triple bonds are present in case of alkynes.

Answer 8

Interpretation Introduction

(b)

Interpretation:

Whether the given general formula is used to characterize (1) an alkane, (2) an alkene with one C=C bond, and (3) an alkyne with one C≡C bond is to be predicted.

Concept introduction:

Alkanes are the saturated hydrocarbons which only contain single carbon-carbon bonds while alkenes are the unsaturated hydrocarbons which contain one or more double bonds. One or more triple bonds are present in case of alkynes.

Answer 9

Interpretation Introduction

(b)

Interpretation:

Whether the given general formula is used to characterize (1) an alkane, (2) an alkene with one C=C bond, and (3) an alkyne with one C≡C bond is to be predicted.

Concept introduction:

Alkanes are the saturated hydrocarbons which only contain single carbon-carbon bonds while alkenes are the unsaturated hydrocarbons which contain one or more double bonds. One or more triple bonds are present in case of alkynes.

Answer 10

Interpretation Introduction

(c)

Interpretation:

Whether the given general formula is used to characterize (1) an alkane, (2) an alkene with one C=C bond, and (3) an alkyne with one C≡C bond is to be predicted.

Concept introduction:

Alkanes are the saturated hydrocarbons which only contain single carbon-carbon bonds while alkenes are the unsaturated hydrocarbons which contain one or more double bonds. One or more triple bonds are present in case of alkynes.

Answer 11

Interpretation Introduction

(c)

Interpretation:

Whether the given general formula is used to characterize (1) an alkane, (2) an alkene with one C=C bond, and (3) an alkyne with one C≡C bond is to be predicted.

Concept introduction:

Alkanes are the saturated hydrocarbons which only contain single carbon-carbon bonds while alkenes are the unsaturated hydrocarbons which contain one or more double bonds. One or more triple bonds are present in case of alkynes.

Answer 12

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Answer 23

Ch. 12 - Prob. 12.1E Ch. 12 - Define the terms alkene, alkyne, and aromatic...Ch. 12 - Select those compounds that can be correctly...Ch. 12 - Prob. 12.4E Ch. 12 - Give the IUPAC name for the following compounds:...Ch. 12 - Prob. 12.6E Ch. 12 - Prob. 12.7E Ch. 12 - Prob. 12.8E Ch. 12 - Prob. 12.9E Ch. 12 - Prob. 12.10E

Solution Summary: The author explains that the given general formula is used to characterize an alkane. Alkenes are the unsaturated hydrocarbons which contain one or more double bonds.

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