Question

Write the chemical equation for the following: (a) Hydration of propene in presence of an acid
(b) Reaction between Ethyl bromide and C₂H₅ONa
(c) Reaction between Dimethyl ether and Hydrogen iodide

Hint:

Markovnikov's rule helps predict the major product in electrophilic additions. For ether cleavage, the least hindered group generally forms the alkyl halide.

Answer 1

(a) The hydration of propene in acidic medium follows Markovnikov’s rule. The –OH group attaches to the more substituted carbon to form 2-propanol.
(b) The reaction between ethyl bromide and sodium ethoxide is a classic Williamson ether synthesis, producing diethyl ether.
(c) Dimethyl ether reacts with hydrogen iodide (HI), cleaving the ether to form methyl iodide and methanol. This is an example of ether cleavage using hydrogen halides.