Question

Name the product formed when phenol is treated with acidified solution of $N{{a}_{2}}C{{r}_ {2}} {{O}_ {7}} $. Give an equation.

Answer 1

Hint: Sodium dichromate is the inorganic compound with the formula$N{{a}_{2}}C{{r}_ {2}} {{O}_ {7}} $. Usually, however, the salt is handled as its dihydrate $N{{a}_{2}}C{{r}_ {2}} {{O}_{7}}.2{{H}_ {2}} O$. Virtually all chromium ore is processed via conversion to sodium dichromate and virtually all compounds and materials based on chromium are prepared from this salt.

Complete step by step solution:
We have been provided with phenol,
Phenol is an aromatic organic compound with the molecular formula ${{C}_ {6}} {{H}_ {5}} OH$. It is a white crystalline solid that is volatile. The molecule consists of a phenyl group $\left(-{{C}_ {6}} {{H}_ {6}} \right) $ bonded to a hydroxyl group (−OH). Mildly acidic, it requires careful handling because it can cause chemical burns.
If we treat phenol with acidified solution of $N{{a}_{2}}C{{r}_ {2}} {{O}_ {7}} $,
The product formed when phenol is treated with acidified solution of $N{{a}_{2}}C{{r}_ {2}} {{O}_ {7}} $ is benzoquinone a conjugated diketone. It is an oxidation reaction.
Oxidation is any chemical reaction that involves the moving of electrons. When iron reacts with oxygen it forms a chemical called rust because it has been oxidized (the iron has lost some electrons) and the oxygen has been reduced (the oxygen has gained some electrons).

1,4-Benzoquinone, commonly known as para-quinone, is a chemical compound with the formula ${{C}_ {6}} {{H}_ {4}} {{O}_ {2}} $. In a pure state, it forms bright-yellow crystals with a characteristic irritating odour, resembling that of chlorine, bleach, and hot plastic or formaldehyde.

Note: The double bonds in aromatic compounds are less likely to participate in additional reactions than those found in typical alkenes. Instead, cyclic aromatic compounds undergo electrophilic substitution reactions (reactions in which the ring acts as a nucleophile to a suitable electrophile).