Introduction to organic chemistry

Oxygen-containing organic compounds are...

Oxygen-containing organic compounds are ethanol and glycerin.

Introduction to organic chemistry

Which of the given substances react with hydrogen?

Unsaturated hydrocarbons (ethylene and acetylene) and ethanol react  with hydrogen.

Introduction to organic chemistry

Which compounds are unsaturated? .

Unsaturated hydrocarbons are ethylene and acetylene.

Introduction to organic chemistry

Which of the organic compounds are isomers? 

Compounds 1, 3, 4, 6 are isomers.

Introduction to organic chemistry

How many isomers can have a compound \(C_4H_{10}\)

This compound has two isomers

Alkanes

For ethane, the following statements are true:

Carbon atoms in the molecule of ethane are joined by a single bond.

Alkanes

For methane, the following statements are true:

Methane is the saturated hydrocarbon and it is lit to form carbon dioxide and water.

Alkanes

How many isomers has bromopropane?

Bromopropane has two isomers. There are 1-bromopropane and 2-bromopropane.

Alkanes

Determine how much of alkanes is shown in the figure?

Figure shows 4 isomers of 1 compound \(C_6H_{14}\).

Alkanes

Which of alkanes has the smallest number of carbon atoms?

Ethane has the smallest number of carbon atoms. 

Alkanes

Calculate the number of atoms contained in about 3 moles of butane?

Butane \(C_4H_{10}\)

1 mole of substance contains \(6,02*10^{26}\) molecules. 3 moles of butane contain \(1,8*10^{27}\) molecules. If 1 molecule of butane contains 14 atoms, to \(1,8*10^{27}\) molecules will have \(2,5*10^{28}\) atoms. 

Alkanes

What type of isomerism is characteristic of alkanes:

The structure of the carbon skeleton isomerism is characteristic of alkanes.

Alkanes

Alkanes comprise:

Alkanes comprise only single bonds.

Alkanes

Select alkanes among the following substances.

The correct answers are \(C_7H_{16}\) and \(CH_3-CH(CH_3)-CH_2-CH_3\)

Alkanes

What hydrocarbon is the main component of gas?

Methane is the main component of gas.

Alkenes

For the ethylene the following statements are true:

Ethylene is an unsaturated hydrocarbon and discolors solution of potassium permanganate.

Alkenes

The following statements are true for acetylene:

Acetylene is an unsaturated hydrocarbon and reacts with chlorine.

Alkenes

How many isomeric alkenes correspond to the formula \(C_6H_{12}\)

9 isomeric alkenes correspond to the formula \(C_6H_{12}\)

1) \(CH_2=CH-CH_2-CH_2-CH_2-CH_3\) Hexene-1

2)\(CH_3-CH=CH-CH_2-CH_2-CH_3\) Hexene-2

3) \(CH_3-CH_2-CH=CH-CH_2-CH_3\) Hexene -3

4) \(CH_2=CH-CH_2-CH(CH_3)-CH_3\) 2-methylpentene-1

5) \(CH_2=CH-CH(CH_3)-CH_2-CH_3\) 3-methylpentene-1

6) \(CH_3-CH=CH-CH(CH_3)-CH_3\) 2-methylpentene-2

7) \(CH_3-CH=C(CH_3)-CH_2-CH_3\) 3-methylpentene-2

8) \(CH_3-CH_2-CH=C(CH_3)-CH\) 2-methylpentene-3

9) \(CH_3-CH_2-C(CH_3)=CH-CH_3\) 3-methylpentene-3  

Alkenes

How many isomers have \(C_3H_5Cl\)?

Cis-1-chloropropene

Trans-1-chloropropene

2-chloropropene

Chlorocyclopropane

Alkenes

How is an alkene called containing five carbon atoms?

This alkene is pentene

Alkenes

Select the correct name of the compound:
\( CH_3-CH_2-CH=CH-CH_3\)

The correct answer is pentene-2

Alkenes

Calculate the number of atoms contained in 2 moles of propylene?

Propylene \(C_3H_6\)

1 mole of substance contains \(6,02*10^{26}\) molecules. 2 moles of propylene contain \(1,2*10^{27}\) molecules. If 1 molecule of propylene contains 9 atoms, to \(1,2*10^{27}\) molecules will have \(1,08*10^{28}\) atoms. 

Alkenes

Select alkenes among the following substances

The correct answers are \(CH_2=CH-CH(CH_3)-CH_3\) and \(CH_3-CH=C(CH_3)-CH_3\)

Alkenes

The composition of the alkenes reflects the general formula:

The composition of the alkenes reflects the general formula \(C_nH_{2n}\)

Alkenes

Select the formula of 2,3,3-trimethylhexene -1

The formula of 2,3,3-trimethylhexene-1 is \(CH_2=C(CH_3)-C(CH_3)_2-CH_2-CH_3\)