Organic Chemistry IGCSE

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

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Which formula is butane?

• C₄H₁₀

• C₅H₁₂

• C₄H₈

• C₂H₆

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

• hydration

• fermentation

• hydrolysis

• condensation

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

ethanol + Y → carbon dioxide + water

• ethane, yeast

• glucose, oxygen

• water, oxygen

• yeast, glucose

The table shows bonds that are present and bonds that are not present in compound P. What type of compound is P? (V = present, X = not present)

• a carboxylic acid

• an alcohol

• an alkane

• an alkene

Which compound below is unsaturated?

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Tags

NGSS.HS-PS1-4