Reactions of Alkanes and Alkenes

What is the condition needed for substitution reaction with chlorine?

• presence of sunlight

• presence of red light

• presence of UV light

• all of the above

What type of chemical reaction is this:

C₃H₈ + Br₂ ⟶ C₃H₇CBr + HBr

• Incomplete combustion

• Hydrogenation

• Complete combustion

• Free radical substitution

Which of the following is true about incomplete combustion?

• It takes place because there is too much fuel

• It takes place because there is not enough supply of air

• The products are soot and hydrocarbons

• The products are hydrogen and water

Give the name of reaction, when alkanes react with bromine in the presence of UV.

• Hydrogenation

• Halogenation

• Hydration

• Hydrohalogenation

What happened if alkane reacts with limited oxygen?

• Produced carbon dioxide and water

• Produced carbon monoxide and water

• Produced oxygen and water

• Produced soot and water

Which two elements do all organic compounds contain?

• Carbon and hydrogen

• Carbon and oxygen

• Oxygen and hydrogen

• Carbon and nitrogen

Tags

NGSS.HS-LS1-6

Give the name of reaction, when alkanes react with bromine in sunglight.

• Hydrogenation

• Halogenation

• Hydration

• Hydrohalogenation

What are the products of complete combustion?

• SO2 + H2O
• H2O
• CO
• CO + H2O
• CO2 + H2O

What does an alkene have that an alkane does not?

• Electrons
• Less reactive
• Oxygen
• Double C=C bond
• Single C-C bond

Tags

NGSS.HS-PS1-1

What are the first 3 alkenes in increasing carbon chain length?

• Methene, ethene, propene

• Ethene, propene, pentene

• Ethene, propene, butene

• Butene, ethene, propene

• Methene, ethene, propane