Q69 of 312 Page 266

The structural formula of an ester is:


Write the formula of the acid and the alcohol from which it is formed.

Carboxylic acid: CH3COOH; Alcohol: CH3CH2OH

More from this chapter

All 312 →
67 Consider the following organic compounds:

HCHO, C2H5OH, C2H6, CH3COOH, C2H5Cl


Choose two compounds which can react in the presence of cone. H2SO4 to form an ester. Give the name and formula of the ester formed.

 68 A neutral organic compound is warmed with some ethanoic acid and a little of cone. H2SO4. Vapours having sweet smell (fruity smell) are evolved. What type of functional group is present in this organic compound? 70 Consider the following organic compounds:

CH3OH, C2HsOH, CH3COCH3, CH3COOH, C2H5COOH, C4H9COOC2H5, CH4, C2H6, CH3CHO, HCHO


Out of these compounds:


(a) Which compound is most likely to be sweet-smelling?


(b) Which compound on treatment with cone. H2SO4 at 170 �C forms an alkene?


(c) Which compound on repeated chlorination forms chloroform?


(d) Which compound is added to alcohol to denature it?


(e) Which compound is a constituent of vinegar?


(f) Which compound is used to sterilise wounds and syringes?

 71 An organic acid X is a liquid, which often freezes during winter time in cold countries, having the molecular formula C2H4O2. On warming it with methanol in the presence of a few drops of concentrated sulphuric acid, a compound Y with a sweet smell is formed.

(a) Identify X and Y. Also write their formulae showing the functional group present in them.


(b) Write a chemical equation for the reaction involved.