Question

The number of moles of glyoxal obtained by the reductive ozonolysis of 39g of benzene is
(A) 3 moles
(B) 1.5 moles
(C) 2 moles
(D) 1 mole​

Answer 1

Answer:

We can see that benzene will give a triozonide derivative as all three of the double bonds will react with one molecule of ozone. This triozonide intermediate is the stable intermediate formed during this reaction.

- Then we will add Zn+H2OZn+H2O in the solution. As Zn metal is a reducing agent, the workup we do here is called reductive workup. So, whenever reductive workup is done on ozonide intermediate, the two carbon atoms that are bonded to oxygen atoms in the ozonide group, get converted to aldehyde functional groups