The statement concerning alkyne properties is incorrect has to be chosen from the given options. Concept Introduction: Organic compounds are represented shortly by the molecular formula and structural formula. Each and every compound has its own molecular formula. Compounds can have same molecular formula but not same structural formula. Alkynes are linear chain unsaturated hydrocarbons. They are nonpolar molecules. Water is a polar molecule. Therefore, alkynes do not get solubilized in water. In other words, alkynes are insoluble in water. Regarding density, alkynes have density lower than water. When alkynes are mixed with water, two layers are formed which is a result of insolubility. Alkynes are present on top of water layer which is due to lesser density. Boiling point of alkynes increase with an increase in carbon‑chain length. The alkynes with lower molecular mass are gases at room temperature. Alkynes undergo combustion reaction to give carbon dioxide and water as product.

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Answer 1

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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 13.12, Problem 5QQ

Interpretation Introduction

Interpretation:

The statement concerning alkyne properties is incorrect has to be chosen from the given options.

Concept Introduction:

Organic compounds are represented shortly by the molecular formula and structural formula. Each and every compound has its own molecular formula. Compounds can have same molecular formula but not same structural formula.

Alkynes are linear chain unsaturated hydrocarbons. They are nonpolar molecules. Water is a polar molecule. Therefore, alkynes do not get solubilized in water. In other words, alkynes are insoluble in water.

Regarding density, alkynes have density lower than water. When alkynes are mixed with water, two layers are formed which is a result of insolubility. Alkynes are present on top of water layer which is due to lesser density.

Boiling point of alkynes increase with an increase in carbon‑chain length. The alkynes with lower molecular mass are gases at room temperature.

Alkynes undergo combustion reaction to give carbon dioxide and water as product.

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Answer 2

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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 13.12, Problem 5QQ

Interpretation Introduction

Interpretation:

The statement concerning alkyne properties is incorrect has to be chosen from the given options.

Concept Introduction:

Organic compounds are represented shortly by the molecular formula and structural formula. Each and every compound has its own molecular formula. Compounds can have same molecular formula but not same structural formula.

Alkynes are linear chain unsaturated hydrocarbons. They are nonpolar molecules. Water is a polar molecule. Therefore, alkynes do not get solubilized in water. In other words, alkynes are insoluble in water.

Regarding density, alkynes have density lower than water. When alkynes are mixed with water, two layers are formed which is a result of insolubility. Alkynes are present on top of water layer which is due to lesser density.

Boiling point of alkynes increase with an increase in carbon‑chain length. The alkynes with lower molecular mass are gases at room temperature.

Alkynes undergo combustion reaction to give carbon dioxide and water as product.

Expert Solution & Answer

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Check out a sample textbook solution

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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 13.12, Problem 5QQ

Interpretation Introduction

Interpretation:

The statement concerning alkyne properties is incorrect has to be chosen from the given options.

Concept Introduction:

Organic compounds are represented shortly by the molecular formula and structural formula. Each and every compound has its own molecular formula. Compounds can have same molecular formula but not same structural formula.

Alkynes are linear chain unsaturated hydrocarbons. They are nonpolar molecules. Water is a polar molecule. Therefore, alkynes do not get solubilized in water. In other words, alkynes are insoluble in water.

Regarding density, alkynes have density lower than water. When alkynes are mixed with water, two layers are formed which is a result of insolubility. Alkynes are present on top of water layer which is due to lesser density.

Boiling point of alkynes increase with an increase in carbon‑chain length. The alkynes with lower molecular mass are gases at room temperature.

Alkynes undergo combustion reaction to give carbon dioxide and water as product.

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

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 13.12, Problem 5QQ

Interpretation Introduction