11.1 Write IUPAC names of the following compounds:
11.2 Write structures of the compounds whose IUPAC names are as follows:
11.3(i) Draw the structures of all isomeric alcohols of molecular formula C5HI20 and give their IUPAC names.
11.4 Explain why propanol has higher boiling point than that of the hydrocarbon, butane?
11.5 Alcohols are comparatively more soluble in water than hydrocarbons of comparable molecular masses. Explain this fact.
11.6 What is meant by hydroboration-oxidation reaction? Illustrate it with an example.
11.7 Give the structures and IUPAC names of monohydric phenols of molecular formula, C7H8O.
11.8 While separating a mixture of ortho and para nitrophenols by steam distillation, name the isomer which will be steam volatile. Give reason.
11.9 Give the equations of reactions for the preparation of phenol from cumene.
11.10 Write chemical reaction for the preparation of phenol from chlorobenzene.
11.11 Write the mechanism of hydration of ethene to yield ethanol.
11.12 You are given benzene, cone. H2S04and NaOH. Write the equations for the preparation of phenol using these reagents.
11.13 Show how will you synthesise
11.14 Give two reactions that show the acidic nature of phenol. Compare its acidity with that of ethanol.
11.15 Explain why is ortho-nitrophenol more acidic than ortho-methoxyphenol?
11.16 Explain how does the – OH group attached to a carbon of benzene ring activate it towards electrophilic substitution?
11.17 Give equations of the following reactions:
11.18 Explain the following with an example
11.19 Write the mechanism of acid dehydration of ethanol to yield ethene.
11.20 How are the following conversions carried out?
11.21 Name the reagents used in the following reactions:
11.22 Give reason for the higher boiling point of ethanol in comparison to methoxymethane.
11.23 Give IUPAC names of the following ethers.
11.24 Write the names of reagents and equations for the preparation of the following ethers by Williamson’s synthesis:
11.25 Illustrate with examples the limitations of Willamson synthesis for the preparation of certain types of ethers.
11.26 How is 1-propoxypropane synthesised from propan-l-ol? Write the mechanism of this reaction.
11.27 Preparation of ethers by acid dehydration of secondary or tertiary alcohols is not a suitable method.Give reason.
11.28 Write the equation of the reaction of hydrogen iodide with (i)1-propoxypropane (ii)methoxybenzene, and (iii)benzyl ethyl ether
11.29 Explain the fact that in aryl alkyl ethers (i) the alkoxy group activates the benzene ring towards electrophilic substitution and (ii) it directs the incoming substituents to ortho and para positions in benzene ring.
11.30 Write the mechanism of the reaction of HI with methoxymethane.
11.31 Write equations of the following reactions:
11.32 Show how would you synthesise the following alcohols from appropriate alkanes?
11.33 When 3-methylbutant 2-ol is treated with HBr, the following reaction takes place: