(i) How would you name the following: I. CH_3-CH_2-C(=O)H (i.e. CH_3-CH_2-CHO); II. CH_3-C≡CH. (ii) When ethanol reacts with ethanoic acid in the presence of conc. H_2SO_4, a substance with sweet smell is produced. Answer the following: I. State the class of compounds to which the sweet smelling compounds belong. II. Write the chemical equation for the reaction. (iii) Why soaps do not produce foam with hard water?
Naming carbon compounds
Usually 3 marks a paper · mostly long answers · asked in 2 of the last papers
Notes are being written
The board questions below are real and complete — they come from the CBSE papers themselves. The written notes for this topic are still being prepared.
Board questions on this topic
2 from the CBSE papers we hold — the exact wording the board used.
(i) Draw two isomeric structures of Butene (C_4H_8). (ii) Name the following compounds: (I) CH_3-CH_2-CH_2-Cl (a chain of three carbons each fully H-saturated with a Cl on the end carbon); (II) CH_3-CH_2-CO-CH_3 (a four-carbon chain with a C=O double bond on the third carbon). (iii) Write the chemical equations for the following reactions. Mention one essential condition each for these reactions to take place. (I) Ethanol undergoes complete oxidation (II) Propene undergoes hydrogenation (III) Ethanoic acid reacts with ethanol.