Pearson Edexcel International GCSE (9–1) · CHEMISTRY · Unit
Organic Chemistry
785 practice questions
Topics covered
Practice questions
171–180 of 785
Question 171
2 marks · Hard
Answer and see the solution →Butan-2-ol reacts with oxygen to produce carbon dioxide and water. State and explain the type of reaction that occurs.
Question 172
5 marks · Hard
Answer and see the solution →The following reactions involve organic compounds. Answer all parts.
(a)[1 mark]Classify the reaction:
(b)[1 mark]State the reason for your answer in part (a).
(c)[1 mark]Classify the reaction:
(d)[1 mark]State the reason for your answer in part (c).
(e)[1 mark]Classify the reaction:
Question 173
2 marks · Hard
Answer and see the solution →State the type of reaction and give a reason:
Question 174
5 marks · Easy
Answer and see the solution →The molecule pentane belongs to a homologous series of organic compounds.
(a)[1 mark]State what is meant by a 'homologous series' in organic chemistry.
(b)[1 mark]Give the general formula for the homologous series that pentane belongs to.
(c)[1 mark]Write the molecular formula for pentane.
(d)[2 marks]Draw the displayed formula for pentane.
Question 175
5 marks · Easy
Answer and see the solution →Ethanol and ethene are two different organic compounds.
(a)[1 mark]Name the type of formula shown here for ethanol: CH3CH2OH
(b)[2 marks]Which functional group is present in ethanol and how does it affect its chemical properties?
(c)[2 marks]Write the displayed formula for ethene.
Question 176
5 marks · Easy
Answer and see the solution →A hydrocarbon in the alkane series contains 7 carbon atoms.
(a)[1 mark]Write the general formula for alkanes.
(b)[2 marks]Calculate the molecular formula for this alkane, showing your working.
(c)[2 marks]Draw the structural (condensed) formula for this alkane.
Question 177
5 marks · Easy
Answer and see the solution →Butanoic acid and butanol are both organic molecules with different functional groups.
(a)[1 mark]State the functional group present in butanoic acid.
(b)[1 mark]What type of formula is shown by this representation: CH3CH2CH2COOH?
(c)[2 marks]Explain how the functional group in butanol affects its chemical properties.
(d)[1 mark]Give one similarity and one difference between the general formulae of carboxylic acids and alcohols.
Question 178
6 marks · Normal
Answer and see the solution →(a)[2 marks]Draw the displayed formula for propene.
(b)[2 marks]Give the IUPAC name for the compound with the following displayed formula.
Displayed formula for this part (c)[2 marks]State and explain the difference in bonding between the compounds you answered in parts a and b.
Question 179
6 marks · Normal
Answer and see the solution →(a)[3 marks]This is the displayed formula for a compound:
Displayed formula for this part Describe how the atoms are connected and identify the type of bonds present.
(b)[2 marks]Give the systematic (IUPAC) name for this compound.
(c)[1 mark]Suggest one homologous series this compound belongs to and give a reason for your answer.
Question 180
6 marks · Normal
Answer and see the solution →(a)[2 marks]State the typical number of bonds formed by each of the following atoms in an organic molecule: carbon, hydrogen, oxygen.
(b)[2 marks]An alcohol has the molecular formula C3H8O. Using your answer to part a, draw the displayed formula for this alcohol.
(c)[2 marks]Name this alcohol according to IUPAC rules.