Question

the number of moles of electrons required to completely oxidise anthracene to anthraquinone

Answer 1

Equivalent Concept :

Steps and Understanding :
1) Given reaction in pic is one of the reaction in which Anthracene is completely oxidised to anthraquinone.

2) Valency factor : Total number moles of electrons lost / gained per unit mole of reactant species.
It is given by
mod(Change in Oxidation Number per unit mole of reactant.)

3) Only Carbon is oxidised in this reaction.

Oxidation Number of Carbon in reactant : (-1 )
" " " " " Product : (+2)
Change in Oxidation number = 2-(-1) = 3

Since. there are two Carbons getting Oxidised :
So, Valency Factor = 2* 3 = 6

So, 6 mole of electrons are required to completely oxidise 1 mole Anthracene to Anthraquinone.