Page 2. Q1.Which one of the following is not a correct statement about vitamin C, shown below? It is a cyclic ester.

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1 Q1.Which one of the following is not a correct statement about vitamin, shown below? It is a cyclic ester. It can form a carboxylic acid on oxidation. It decolourises a solution of bromine in water. It is a planar molecule. Q2.In which one of the following mixtures does a redox reaction occur? etha al a d Tolle s reage t ethanoyl chloride and ethanol ethanal and hydrogen cyanide ethanoic acid and sodium hydroxide Q3.Propanoic acid reacts with methanol in the presence of a small amount of concentrated sulphuric acid. The empirical formula of the ester formed is H 2O 2H 6O 2 2H 4O 2 2H 4O PhysicsndMathsTutor.com Page 2

2 Q4.Which one of the following is not a correct general formula for the non-cyclic compounds listed? alcohols nh 2n+2O aldehydes nh 2n+1O esters nh 2nO 2 primary amines nh 2n+3N Q5.For this question refer to the reaction scheme below. Which one of the following statements is not correct? Reaction of W with sodium cyanide followed by hydrolysis of the resulting product gives propanoic acid. Mild oxidation of Z produces a co pou d that reacts ith Tolle s reage t, for i g a sil er mirror. Z reacts with ethanoic acid to produce the ester propyl ethanoate. W undergoes addition polymerisation to form poly(propene). PhysicsndMathsTutor.com Page 3

3 Q6.Ibuprofen is a drug used as an alternative to aspirin for the relief of pain, fever and inflammation. The structure of ibuprofen is shown below. Which one of the following statements is not correct? It has optical isomers. It liberates carbon dioxide with sodium carbonate solution. It undergoes esterification with ethanol. It undergoes oxidation with acidified potassium dichromate(vi). Q7.utan-1-ol was converted into butyl propanoate by reaction with an excess of propanoic acid. In the reaction, 6.0 g of the alcohol gave 7.4 g of the ester. The percentage yield of ester was PhysicsndMathsTutor.com Page 4

4 Q8.Which one of the following would not react with aqueous silver nitrate to produce a precipitate that is soluble in concentrated aqueous ammonia? ar 2 [OI 4] 2 (H 3) 4N + I H 3Ol Q9.Which compound is formed by the reaction of ethane-1,2-diol with an acid? H 3H 2 O H 2H 2OH PhysicsndMathsTutor.com Page 5

5 Q10.Which one of the following types of reaction mechanism is not involved in the above sequence? H 3H 2H 3 (H 3) 2Hl (H 3) 2HN (H 3) 2HH 2NHOH 3 (H 3) 2HH 2NH 2 free-radical substitution nucleophilic substitution elimination nucleophilic addition-elimination Q11.The compound lithium tetrahydridoaluminate(iii), LilH 4, is a useful reducing agent. It behaves in a similar fashion to NaH 4. arbonyl compounds and carboxylic acids are reduced to alcohols. However, LilH 4 also reduces water in a violent reaction so that it must be used in an organic solvent. Which one of the following can be reduced by LilH 4 to a primary alcohol? PhysicsndMathsTutor.com Page 6

6 Q12.n excess of methanol was mixed with 12 g of ethanoic acid and an acid catalyst. t equilibrium the mixture contained 8 g of methyl ethanoate. The percentage yield of ester present was Q13.cid hydrolysis of produces H 3H(OH)H 2H 2OOH H 2(OH)H 2H 2H 2OOH H 3H(OH)H 2H 2OHO H 2(OH)H 2H 2H 2OHO PhysicsndMathsTutor.com Page 7

7 Q14.The structural formula of ethyl 2-methylpropanoate is Q15.Hydrolysis of the ester, H 3OOH 2H 2H 3, produces ethanoic acid. In an experiment, 2.04 g of the ester was used and 0.90 g of ethanoic acid was produced. The percentage yield of ethanoic acid was: PhysicsndMathsTutor.com Page 8

8 Q16.How many structural isomers, which are esters, have the molecular formula 4H 8O 2? Q17.H 2O is the empirical formula of methanol methyl methanoate ethane-1,2-diol butanal PhysicsndMathsTutor.com Page 9

9 Q18. Summarised directions for recording responses to multiple completion questions (i), (ii) and (iii) only (i) and (iii) only (ii) and (iv) only (iv) alone Isomers of the ester HOOH 2H 2H 3, include (i) (ii) (iii) ethyl ethanoate methyl propanoate butanoic acid (iv) butyl methanoate PhysicsndMathsTutor.com Page 10