Alcohols: Edexcel International A Level Chemistry questions

Every Edexcel International A Level Chemistry exam question on 10C Alcohols (specification points 10.15–10.20), 2019–2025, with its mark scheme and examiner’s report.

All 139 questions on Alcohols, as a list

June 2025, AS Unit 2, Q12(b) (1 mark): Which compound can be oxidised to form a ketone? (1) A butanone B butanal C butan-2-ol D methylpropan-2-ol
June 2025, AS Unit 2, Q12(c) (1 mark): Which compound forms a red precipitate when warmed with Fehling’s solution? (1) A butanone B butanal C butan-2-ol D methylpropan-2-ol Use this space for any rou
June 2025, AS Unit 2, Q16(a) (2 marks): Give a chemical test, including the result, to show that alcohols contain an OH group. (2)
June 2025, AS Unit 2, Q16(c)(i) (2 marks): Name the reagents and conditions for this conversion. (2)
June 2025, AS Unit 2, Q16(c)(iii) (1 mark): Give a reason why cyclohexanol and cyclohexanone can be separated by fractional distillation but not by simple distillation. (1)
June 2025, AS Unit 3, Q1(a) (1 mark): Phosphorus(V) chloride is added to separate samples of P and Q. A gas, R, is evolved in each reaction. Identify R, by name or formula. (1)
June 2025, AS Unit 3, Q1(b)(i) (1 mark): Give the colour change of the mixtures during heating. (1) From To
June 2025, AS Unit 3, Q1(b)(ii) (1 mark): Identify the functional group present in P and Q. (1)
June 2025 (A), Unit 5, Q18(d) (2 marks): Suggest two ways in which the maximum yield of the aldehyde in Step 4 could be obtained. (2)
January 2025, AS Unit 2, Q21(d)(i) (1 mark): State the type of reaction taking place as methanol is converted into methanal. (1)
January 2025, AS Unit 2, Q21(d)(ii) (4 marks): Give the reagents and conditions that are needed for this reaction in the laboratory. Include in your answer any colour change seen. (4) Reagents . Conditions C
October 2024, AS Unit 2, Q12 (1 mark): What is the name of the alcohol shown? OH A 4-ethyl-4-methylbutan-3-ol B 4-methylhexan-3-ol C 3-methylhexan-3-ol D 2-ethylpentan-3-ol Use this space for any rou
October 2024, AS Unit 2, Q14(a) (1 mark): Which compound would not give a colour change when heated with acidified potassium dichromate(VI) solution? (1) A propan-1-ol B propan-2-ol C propanal D propano
October 2024, AS Unit 3, Q3(c)(i) (4 marks): The purified organic liquid was refluxed with acidified potassium dichromate(VI) solution. A colour change was observed while refluxing. The resulting solution
October 2024, AS Unit 3, Q3(c)(ii) (2 marks): Explain how information, easily obtained from the distillation experiment, could be used to confirm the identity of the final product. (2)
June 2024, AS Unit 2, Q20(c) (6 marks): Three students were asked to carry out a single chemical test to unambiguously identify the presence of the ‒OH group in the three terpenoid compounds, menthol,
June 2024, AS Unit 3, Q2(a) (1 mark): Suggest why the flask in Step 2 was frequently placed in a stream of cold running water as the sulfuric acid was gradually added. (1)
June 2024, AS Unit 3, Q2(d) (3 marks): Complete the labelled diagram of the distillation apparatus used in Step 4. (3) round-bottomed ﬂask reaction mixture of ethanol, sulfuric acid A and potassium b
June 2024, AS Unit 3, Q2(j) (4 marks): State a chemical test for the –OH group in ethanol and a chemical test for the –Br group in bromoethane. Include the expected positive observations. (4) –OH gro
June 2024, Unit 5, Q19(c)(i) (1 mark): Give the IUPAC name for this molecule. (1)
June 2024, Unit 6, Q1(a) (2 marks): Test 1 A small amount of phosphorus(V) chloride, PCl5, is added to 2 cm3 of A. Observation misty fumes given off Test 2 Aqueous sodium hydrogencarbonate, NaHCO3
June 2024 (R), AS Unit 2, Q17 (1 mark): Which alcohol can be oxidised to a carboxylic acid by acidified potassium dichromate(VI)? OH A B OH C OH OH D
June 2024 (R), AS Unit 2, Q20(b)(i) (3 marks): Some chemical tests were carried out on acetoin. These tests identify one of the two functional groups. Acetoin produced steamy fumes when reacted with PCl5 . A
June 2024 (R), AS Unit 3, Q5(c)(i) (3 marks): The C–O bond is broken in the mechanism. Using your knowledge of carbocations, explain which alcohol may react fastest in the experiment. (3)
June 2024 (R), AS Unit 3, Q5(c)(ii) (5 marks): Describe how a solution of acidified potassium dichromate(VI) and subsequent chemical tests could be used to distinguish between alcohols X, Y and Z. You may as
January 2024, AS Unit 2, Q16 (1 mark): What is the total number of structural isomers for cyclic alcohols with the molecular formula C4H8O? A 2 B 3 C 4 D 5 Use this space for any rough working. Anyth
January 2024, AS Unit 2, Q17 (1 mark): Which is a correct equation for the incomplete combustion of butan-1-ol? A CH3CH2CH2CH2OH + 6O2 → 4CO2 + 5H2O B CH3CH2CH2CH2OH + 6½O2 → 4CO2 + 5H2O C CH3CH2CH2C
January 2024, AS Unit 2, Q18 (1 mark): Which reagent(s) could be used to produce a chloroalkane from a tertiary alcohol? 1 PCl5 2 concentrated HCl 3 concentrated H2SO4 and KCl A 1, 2 and 3 B 1 and 3
January 2024, AS Unit 2, Q19 (1 mark): What amount, in mol, of [O] is needed to convert 1 mol of pentane-1,3,5-triol into 3-oxopentanedioic acid and water? OH O OH OH HO OH O O pentane-1,3,5-triol 3-
January 2024, AS Unit 3, Q1(a) (3 marks): Give the name of each of the three circled functional groups. (3) Functional group 1 Functional group 2 Functional group 3
January 2024, AS Unit 3, Q1(b) (4 marks): Describe a chemical test and the expected positive result for both functional group 2 and functional group 3. (4) Functional group 2 Test Result Functional grou
January 2024, AS Unit 3, Q4(b)(i) (2 marks): Explain why the reaction mixture is heated as shown, instead of heating under reflux. (2)
January 2024, Unit 6, Q2(b)(i) (1 mark): Name the functional group in X identified by this test. (1)
October 2023, AS Unit 2, Q13(a) (1 mark): Which of these is a tertiary alcohol? (1) A 1‑methylcyclopentanol B 2‑methylcyclopentanol C 2‑methylbutan‑1‑ol D 3‑methylpentan‑2‑ol
October 2023, AS Unit 2, Q13(b) (1 mark): Which reagent reacts with tertiary alcohols? (1) A acidified aqueous potassium dichromate(VI) B bromine water C phosphorus(V) chloride D sodium carbonate soluti
October 2023, AS Unit 2, Q21(b)(ii) (1 mark): The propenal is then oxidised to propenoic acid. Write an equation for this reaction using [O] to represent the oxygen from the oxidising agent. (1)
October 2023, AS Unit 3, Q3(h) (2 marks): Separate samples of cyclohexanol and the cyclohexene product were tested with phosphorus(V) chloride and with bromine water. Complete the table to show the obse
June 2023, AS Unit 2, Q18(a) (1 mark): Which reagent is used for this reaction? (1) A 50 % sulfuric acid B ethanolic potassium hydroxide C phosphoric(V) acid D red phosphorus
June 2023, AS Unit 2, Q18(b) (1 mark): The reaction is best classified as (1) A elimination B hydrolysis C reduction D substitution
June 2023, AS Unit 3, Q2(a) (1 mark): A small amount of phosphorus(V) chloride, PCl5 , is added to separate 2 cm3 samples of each compound. Observations C D Misty fumes are given off Misty fumes are
June 2023, AS Unit 3, Q3(a)(i) (2 marks): Explain why apparatus E is not suitable for the oxidation of butan‑1‑ol to butanoic acid. (2)
June 2023, AS Unit 3, Q3(a)(ii) (1 mark): Give a different reason why apparatus G is also not suitable for the oxidation of butan‑1‑ol to butanoic acid. (1)
June 2023, AS Unit 3, Q3(a)(iv) (1 mark): State the reaction mixture that can be used to oxidise the butan‑1‑ol to butanoic acid. (1)
June 2023, AS Unit 3, Q3(a)(v) (1 mark): Give the colour change observed in the flask during this oxidation. (1) From to
June 2023, AS Unit 3, Q3(b)(i) (1 mark): Name a suitable chemical reagent to carry out this elimination reaction. (1)
June 2023, Unit 6, Q2(a)(i) (3 marks): Deduce the functional group in X. Justify your answer by referring to the observations. (3)
June 2023, Unit 6, Q2(b) (1 mark): The 13C NMR spectrum of X has two peaks. Draw the displayed formula of X. (1)
January 2023, AS Unit 2, Q19(a) (3 marks): Draw the skeletal formula of each of the three tertiary alcohols with the formula C6H14O. (3) tertiary alcohol 1 tertiary alcohol 2 tertiary alcohol 3
January 2023, AS Unit 2, Q19(b)(i) (1 mark): Give the IUPAC name of alcohol A. (1)
January 2023, AS Unit 2, Q19(c) (3 marks): Give the structure of the organic product of each reaction shown. (3) Reaction 1 K2Cr2O7 , H2SO4 OH heat under reflux Reaction 2 K2Cr2O7 , H2SO4 OH heat under r
January 2023, AS Unit 2, Q22(b)(iii) (1 mark): Draw the displayed formula of N-methyldiethanolamine, CH3N(CH2CH2OH)2 . (1)
January 2023, AS Unit 3, Q4(a) (2 marks): Give a chemical test, with the expected result, which would show the presence of the –OH group in any alcohol. (2) Test Result
January 2023, AS Unit 3, Q4(b)(i) (2 marks): A sample of butan‑1‑ol is warmed with a solution of potassium dichromate(VI) in dilute sulfuric acid. State the colour change which would be observed. (2)
January 2023, AS Unit 3, Q4(b)(ii) (1 mark): The three isomers K, L and M are warmed separately with portions of a solution of potassium dichromate(VI) in dilute sulfuric acid. No colour change is observed
January 2023, AS Unit 3, Q4(b)(iii) (3 marks): The other isomers L and M are oxidised when warmed with a solution of potassium dichromate(VI) in dilute sulfuric acid. Complete the table to show the displayed
January 2023, AS Unit 3, Q4(b)(iv) (3 marks): Give one chemical test, with the expected results, which would distinguish these oxidation products of isomers L and M. (3) Test Result for oxidation product of
October 2022, AS Unit 2, Q22(a) (2 marks): 2-methylpropan-1-ol is a primary alcohol. Explain what is meant by the terms alcohol and primary. (2)
October 2022, AS Unit 2, Q22(b) (5 marks): Complete the table for the other three structural isomers of C4H10O which are alcohols. (5) Name butan-2-ol H H H H Displayed H C C C C O H formula H H H H Clas
October 2022, AS Unit 2, Q22(c)(i) (2 marks): Identify by name or formula the reagents needed to prepare the oxidising mixture. (2)
October 2022, AS Unit 2, Q22(c)(ii) (1 mark): Write the equation for Step 1 using [O] to represent the oxygen from the oxidising agent. (1)
October 2022, AS Unit 3, Q4(a) (2 marks): State the colour change seen when an alcohol is oxidised with acidified potassium dichromate(VI). (2)
October 2022, AS Unit 3, Q4(b) (4 marks): Draw a labelled diagram of the apparatus that is required to prepare and collect a sample of propanal by heating propan‑1‑ol with acidified potassium dichromate
October 2022, AS Unit 3, Q4(c)(ii) (1 mark): State why there is no reaction when 2-methylpropan-2-ol is heated with acidified potassium dichromate(VI). (1)
October 2022, AS Unit 3, Q4(c)(iii) (1 mark): Identify, by name or formula, all the possible oxidation products of propan‑1‑ol and propan‑2‑ol. (1)
October 2022, Unit 4, Q13 (1 mark): Which reaction does not produce a tertiary alcohol as one of the products? A (CH3)2C=CH2 + H2O B (CH3)3CBr + H2O C (CH3)3CCOC(CH3)3 + LiAlH4 D (CH3)3CCOOC(CH3)3
October 2022, Unit 5, Q23(b)(i) (2 marks): State the reagents and conditions needed for this oxidation. (2)
October 2022, Unit 5, Q23(b)(ii) (2 marks): The boiling temperature of salicylaldehyde is 197 °C. Suggest why this makes it very difficult to obtain salicylaldehyde by oxidising salicyl alcohol. . (2)
June 2022, AS Unit 2, Q13 (1 mark): Which of these alcohols will produce a carboxylic acid when heated under reflux with acidified potassium dichromate(VI)? P Q OH OH R S OH OH A P only B P and Q
June 2022, AS Unit 2, Q14(a) (1 mark): What is the reagent for Reaction 1? (1) A acidified potassium manganate(VII) B aqueous bromine C concentrated phosphoric(V) acid D phosphorus(V) chloride
June 2022, AS Unit 2, Q14(b) (1 mark): The reagent for Reaction 2 is acidified potassium dichromate(VI). Which equation best represents this reaction? (1) A C6H11OH → C6H10O + H2 B C6H11OH → C6H10O +
June 2022, AS Unit 3, Q3(b) (2 marks): Explain why adding phosphoric(V) acid slowly, with cooling and swirling, in Step 2 results in a higher yield of cyclohexene. (2)
June 2022, AS Unit 3, Q3(d) (2 marks): Explain why, in Step 4, the distillate is collected in a temperature range of 80 °C to 90 °C. (2) Substance Boiling temperature / °C Cyclohexanol 162 Cyclohexen
June 2022, AS Unit 3, Q3(e)(i) (2 marks): State what is removed by washing the mixture with sodium carbonate solution in Step 5. Include an ionic equation for the reaction. State symbols are not require
June 2022, AS Unit 3, Q3(g)(ii) (2 marks): State a chemical test and the expected observation for an –OH group. (2)
June 2022, AS Unit 3, Q3(g)(iii) (1 mark): State whether or not the test in (g)(ii) could be used on the organic product to show if cyclohexanol remains when Step 5 is complete. Justify your answer. (1)
January 2022, AS Unit 2, Q10 (1 mark): Which reagent would convert an alcohol into an alkene? A acidified potassium dichromate(VI) B anhydrous calcium sulfate C concentrated phosphoric acid D ethanol
January 2022, AS Unit 3, Q2(b) (1 mark): When phosphorus(V) chloride is added to X, steamy white fumes are seen. State what can be deduced about compound X from this observation only. (1)
January 2022, AS Unit 3, Q2(c) (3 marks): Compound X is converted into compound Y when refluxed with excess sodium dichromate(VI) in sulfuric acid. Compound Y is a liquid that is soluble in the reaction
January 2022, AS Unit 3, Q2(f) (2 marks): Compound X contains one type of functional group. Compound Y contains two different functional groups. Use the information in the question to deduce the structu
January 2022, Unit 4, Q20(b)(iii) (6 marks): A series of tests was performed on compound A. Test Observation 1 addition of phosphorus(V) chloride misty fumes 2 addition of 2,4‑dinitrophenylhydrazine orange
October 2021, AS Unit 2, Q2 (1 mark): Which of these compounds does not react with acidified potassium dichromate(VI)? A CH3CH2OH B CH3CHOHCH3 C CH3CH2CHO D CH3COCH3
October 2021, AS Unit 2, Q3 (1 mark): Which of these compounds is a tertiary alcohol? A 2-methylpropan-2-ol B 3-methylbutan-2-ol C 2,2-dimethylpropan-1-ol D 3,3-dimethylbutan-2-ol
October 2021, AS Unit 2, Q22(a) (2 marks): Give one advantage and one disadvantage of using bioethanol in petrol. (2) Advantage Disadvantage
October 2021, AS Unit 2, Q22(b) (1 mark): Suggest why this fermentation must be carried out in the absence of air. (1)
October 2021, AS Unit 2, Q22(c) (1 mark): Suggest how the ethanol can be obtained, after filtering the fermentation mixture. (1)
October 2021, AS Unit 2, Q22(d)(ii) (1 mark): Suggest a problem arising from the hygroscopic nature of ethanol when using this fuel in a motor vehicle. (1)
October 2021, AS Unit 3, Q2(a) (4 marks): Geraniol has two different types of functional group. Name the functional groups, giving a chemical test and its positive result to show the presence of each gr
October 2021, Unit 5, Q21(d)(i) (2 marks): State the reagents and conditions needed in Step X. (2)
October 2021, Unit 6, Q4(b) (2 marks): The distillate collected in Step 3 is the alcohol ROH. Describe a chemical test, and its positive result, to show the presence of an –OH group in any alcohol. (
June 2021, AS Unit 2, Q18(a) (1 mark): 1-bromopropane does not occur naturally but can be made from propan-1-ol. Identify the reagent or reagents you would use to make 1-bromopropane from propan-1-ol
June 2021, AS Unit 3, Q2(a) (2 marks): Give a chemical test to show the presence of the OH group in all three compounds, including the expected result. (2)
June 2021, AS Unit 3, Q2(c) (2 marks): Separate samples of each of these compounds are warmed with acidified potassium dichromate(VI). Complete the table to give the colour changes observed, if any.
June 2021, AS Unit 3, Q4(a) (2 marks): Suggest why the percentage yield of 1-bromobutane might be lower if the cold water bath was not used in Step 1. (2)
June 2021, AS Unit 3, Q4(b)(ii) (3 marks): Draw a labelled diagram of the apparatus that you would use to heat the mixture under reflux in Step 2. (3)
June 2021, Unit 4, Q8(c) (1 mark): Four groups of students warmed samples of menthol with sodium dichromate(VI) in acid. They purified the reaction mixture and carried out a series of qualitative
January 2021, AS Unit 2, Q14(a) (1 mark): What type of reaction occurs? A addition B elimination C hydrolysis D substitution
January 2021, AS Unit 2, Q14(b) (1 mark): The structure of 2-methylpentan-3-ol is shown. CH₃ H₃C CH₃ OH This alcohol reacts with concentrated phosphoric(V) acid. How many different alkenes can form? A o
January 2021, AS Unit 2, Q19(c)(i) (1 mark): Draw the structure of Y. (1)
January 2021, AS Unit 2, Q19(c)(ii) (2 marks): State the conditions needed to maximise the yield of each product. (2) Conditions for maximum yield of Y Conditions for maximum yield of ethanoic acid
January 2021, AS Unit 2, Q20(a)(i) (1 mark): Give the systematic name of compound A. (1)
January 2021, AS Unit 2, Q20(a)(ii) (1 mark): Identify, by name or formula, a suitable reagent for Step 1. (1)
January 2021, Unit 4, Q17(a)(iii) (1 mark): Give the structure of the organic product formed when lactic acid reacts with concentrated phosphoric(V) acid, H3PO4 . (1)
October 2020, AS Unit 2, Q12(a) (1 mark): What is the name of compound L? OH L (1) A Z‑oct‑3‑en‑3‑ol B E‑oct‑3‑en‑3‑ol C Z‑oct‑5‑en‑3‑ol D E‑oct‑5‑en‑3‑ol
October 2020, AS Unit 2, Q12(b) (1 mark): Compound L can be converted into compound M. OH Cl M Cl Which reagent should be used? (1) A Cl2(g) B HCl(g) C PCl5(s) D KCl(aq)
October 2020, AS Unit 2, Q12(c) (1 mark): Compound L can also be converted into compound N. Cl N Which reagent should be used? (1) A Cl2(g) B HCl(g) C PCl5(s) D KCl(aq)
October 2020, AS Unit 2, Q17(b)(i) (2 marks): State the reagents and reaction conditions for this oxidation in the laboratory. (2)
October 2020, AS Unit 2, Q17(b)(ii) (1 mark): Complete the equation to show the products of this oxidation. State symbols are not required. (1) CH3OH + [O] →
October 2020, AS Unit 2, Q17(b)(iii) (2 marks): Give a chemical test, and its positive result, that could be used to confirm the functional group in methanoic acid. (2)
October 2020, AS Unit 3, Q3(a)(i) (1 mark): Identify, by name or formula, the steamy fumes produced in Test 1. (1) Test 2 About 1 cm3 of sodium hydrogencarbonate solution was added to 1 cm3 of each liquid
October 2020, AS Unit 3, Q3(a)(iii) (2 marks): Using the results from Tests 1 and 2 and the information at the start of the question, name the functional groups present in F and G. (2) Functional group in F
October 2020, AS Unit 3, Q3(a)(iv) (2 marks): F and G both have a molar mass of 46 g mol−1. Draw the displayed formula of F and G. (2) F G
October 2020, Unit 4, Q15(b) (1 mark): Which test would distinguish between 2-methylpropan-2-ol, (CH3)3COH, and butan-1-ol, CH3CH2CH2CH2OH? (1) A B C D
October 2020, Unit 4, Q17(c)(i) (4 marks): Identify, by name or formula, compounds V, W and F. Justify your answer by using all the available information. (4)
October 2020, Unit 6, Q1(b)(ii) (1 mark): Suggest the name or formula of the organic product formed in the green mixture. (1)
January 2020, AS Unit 2, Q14(b) (1 mark): Propanal and propanone can be distinguished by chemical tests. Which pair of observations is correct? (1) Observation with Observation Test propanal with propan
January 2020, AS Unit 2, Q17(a) (1 mark): Draw the displayed formula of 2-methylbutan-2-ol. (1)
January 2020, AS Unit 2, Q17(b)(i) (1 mark): Identify by name or formula a reagent for this reaction. (1)
January 2020, AS Unit 2, Q17(b)(ii) (1 mark): Draw the displayed formula of the other alkene formed. (1)
January 2020, AS Unit 2, Q17(d)(i) (1 mark): Complete the equation for this reaction. (1) C5H11OH + PCl5
January 2020, AS Unit 2, Q17(d)(ii) (2 marks): Give two reasons why this reaction would produce a greater yield of this chloroalkane than the combined reactions in (b) and (c). (2)
January 2020, AS Unit 2, Q17(e) (2 marks): In the liver, enzymes oxidise some alcohols as part of the process which removes them from the body. During this process any aldehydes produced are toxic. Other
January 2020, AS Unit 3, Q1(c)(i) (2 marks): Acidified potassium dichromate(VI) solution was added to two test tubes each containing a different alcohol. The test tubes were placed in a warm water bath. Th
January 2020, AS Unit 3, Q1(c)(ii) (2 marks): Give a chemical test, with the expected observation, to confirm the presence of the hydroxy group. (2) Test Observation
January 2020, AS Unit 3, Q4(a) (2 marks): Step 1 5 cm3 of ethanol and 5 cm3 of water are added to a round-bottomed flask. The flask is placed in an ice bath and 5 cm3 of concentrated sulfuric acid is a
January 2020, AS Unit 3, Q4(c)(i) (3 marks): Draw a labelled diagram to show the apparatus suitable for this distillation. Include a thermometer but no clamps or stands. (3)
January 2020, AS Unit 3, Q4(e) (1 mark): Step 5 After removing the aqueous layer, sodium hydrogencarbonate solution is added to the impure bromoethane in a separating funnel and the two layers separat
June 2019, AS Unit 2, Q22(a) (2 marks): Describe a chemical test and its positive result for the alcohol functional group in Y. (2)
June 2019, AS Unit 2, Q22(b)(i) (4 marks): Draw the skeletal formulae of the four isomers formed in this reaction. (4)
June 2019, AS Unit 2, Q22(c) (2 marks): An isomer of Y, citronellol, has the systematic name 3,7-dimethyloct-6-en-1-ol. Draw the structure of citronellol. (2)
June 2019, AS Unit 2, Q23(a) (1 mark): Write the balanced equation for the oxidation of propan-1-ol to form propanoic acid. Use [O] to represent the oxygen from the oxidising agent. State symbols are
June 2019, AS Unit 2, Q23(b) (6 marks): Propan-1-ol is heated with a concentrated solution of acidified potassium dichromate(VI). Explain how the conditions used affect the rate of the reaction and en
June 2019, AS Unit 2, Q23(c) (1 mark): A student suggested using universal indicator to check for the presence of propanoic acid formed in the reaction mixture. Give a reason why the result of this t
June 2019, AS Unit 3, Q2(a) (2 marks): A chemical test may be used to confirm the presence of the hydroxyl group in A. Identify a suitable reagent for this test, giving the positive result. (2)
June 2019, AS Unit 3, Q2(b)(i) (1 mark): Identify the reagent mixture that can be used to oxidise A. (1)
June 2019, AS Unit 3, Q2(b)(ii) (2 marks): One student said that if A was a primary alcohol this could be shown by oxidising it to the corresponding aldehyde and testing the product. Identify which appar
June 2019, AS Unit 3, Q2(b)(iv) (1 mark): State whether or not a positive result for the test in (b)(iii), together with the molecular formula, would allow the alcohol A to be identified. Justify your a
June 2019, AS Unit 3, Q2(b)(v) (2 marks): Another student said that if A was a secondary alcohol this could be shown by oxidising it to the corresponding ketone. Identify which apparatus (1, 2 or 3) sho
June 2019, AS Unit 3, Q2(c)(i) (2 marks): Give two reasons for the use of the mineral wool. (2)
June 2019, AS Unit 3, Q2(c)(ii) (2 marks): Explain why it is necessary to remove the delivery tube from the heated tube immediately when heating stops. (2)

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