Aromatic hydrocarbons need to be explained by taking example of benzene. The difference between delocalization of electrons in benzene and in simple alkenes and alkynes needs to be explained. Concept introduction: Aromatic hydrocarbons are known by the presence of sigma bond and delocalized pi electrons between the carbon atoms which are in cyclic form. Benzene, toluene, anthracene etc. are some common aromatic hydrocarbons.

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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 21, Problem 4E

Interpretation Introduction

Interpretation: Aromatic hydrocarbons need to be explained by taking example of benzene.

The difference between delocalization of electrons in benzene and in simple alkenes and alkynes needs to be explained.

Concept introduction: Aromatic hydrocarbons are known by the presence of sigma bond and delocalized pi electrons between the carbon atoms which are in cyclic form. Benzene, toluene, anthracene etc. are some common aromatic hydrocarbons.

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You are teaching a class in organic chemistry to grade 12 students. Outline the differences in 3 physical properties between alkanes, alcohols, and carboxylic acids. Note: they all have the same hydrocarbon length.

(a) Calculate the standard enthalpy change for the combustion of 1 mol of benzene, C6H61l2, to CO21g2 and H2O1l2.(b) Compare the quantity of heat produced by combustion of 1.00 g propane with that produced by 1.00 g benzene.

Classify the following hydrocarbons, and draw a Lewis structure for each one. A compound may fit into more than one of the following classifications: alkane cycloalkane aromatic hydrocarbon alkene cycloalkene alkyne cycloalkyne CH,-C=C-CH CH, —CH, —CH, —сH (d) CHCH, (f) CCH - СНC(CH), (h) - CH2CH3 (i)

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 21, Problem 4E

Interpretation Introduction

Interpretation: Aromatic hydrocarbons need to be explained by taking example of benzene.

The difference between delocalization of electrons in benzene and in simple alkenes and alkynes needs to be explained.

Concept introduction: Aromatic hydrocarbons are known by the presence of sigma bond and delocalized pi electrons between the carbon atoms which are in cyclic form. Benzene, toluene, anthracene etc. are some common aromatic hydrocarbons.

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Answer 3

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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 21, Problem 4E

Interpretation Introduction

Interpretation: Aromatic hydrocarbons need to be explained by taking example of benzene.

The difference between delocalization of electrons in benzene and in simple alkenes and alkynes needs to be explained.

Concept introduction: Aromatic hydrocarbons are known by the presence of sigma bond and delocalized pi electrons between the carbon atoms which are in cyclic form. Benzene, toluene, anthracene etc. are some common aromatic hydrocarbons.

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Answer 4

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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 21, Problem 4E

Interpretation Introduction