Complete the following reactions:
a. `overset((A))"Glyoxal" overset(1. NaOH)underset(2.H_(3)O^(o+))rarr (B)`
b. `underset((A))"Glyoxalic acid" overset(1.NaOH//Delta)underset(2.H_(3)O^(o+))rarr (B)+(C )`
c.
d. `CHO overset(HCO+overset(Θ)(OH))rarr (B) overset(HCHO+overset(Θ)(OH))rarr (C )+(D)`
e.
f.

Explanation

a.
b.
c.
(E ) is an important industrial product. Its ester with polybasic acids gives resin polymers used for surface coating. Its tetra nitro derivative (PETN) (penta erythritol tetra nitro) is a useful explosive.
d.
e.
f.