Question

When aromatic hydrocarbons are treated with chloroform and aluminum chloride, no colour is observed.

• A. True
• B. False

Answer 1

The correct option is B False

When aromatic hydrocarbons are treated with chloroform and aluminum chloride, orange to red colours are obtained. These colours are due to the formation of triarylmethyl cations, $A{r}_3{C}^{+}$ which are formed by a Friedel-Craft reaction followed by a transfer of hydride ion.