Organic Chemistry IGCSE

Which structure represents a compound which has pH less than 7?

• 
• 
• 
• 

Which equation represents the incomplete combustion of pentane, C₅H₁₂ ?

• 2C₅H₁₂ + 11O₂ → 10CO + 12H₂O

• C₅H₁₂ + 8O₂ → 5CO₂ + 6H₂O

• 2C₅H₁₂ + 17O₂ → 10CO + 24H₂O

• C₅H₁₂ + 10O₂ → 5CO₂ + 12H₂

There are two processes to manufacture ethanol. Which of these processes uses a catalyst?

• A

• B

• C

• D

Which equation represents the complete combustion of ethane, C₂H₆?

• 2C₂H₆ + 3O₂ → 4C + 6H₂O

• 2C₂H₆ + 5O₂ → 4CO + 6H₂O

• 2C₂H₆ + 7O₂ → 4CO₂ + 6H₂O

• C₂H₆ + 2O₂ → 2CO₂ + 3H₂

Which statement about homologous series is not correct?

• All homologous series are hydrocarbons.

• Members of a homologous series have the same functional group.

• Members of a homologous series have similar chemical properties.

• The alkanes are an example of a homologous series.

Name the product of these reactions.

ethene + bromine → ___

ethene + steam → ___

• ethane, ethanol

• dibromoethane, ethanol

• ethanol, ethane

• ethanol, dibromoethane

Which compounds have the same functional group?

• propanol and propanoic acid

• butane and butene

• ethane and propane

• butene and butanol

Name X and Y.

X + yeast → ethanol

etanol + oxygen → carbon dioxide + Y

• ethane, yeast

• glucose, steam

• water, steam

• yeast, glucose

Tags

NGSS.HS-LS1-7

The table shows bonds that are present and bonds that are not present in compound P. What type of compound is P?

• a carboxylic acid

• an alcohol

• an alkane

• an alkene

Which compound below is unsaturated?

• 
• 
• 
• 

Tags

NGSS.HS-PS1-4