Question

explain how the 1:1 carbon to hydrogen ratio is derived from a aromatic hydrocarbon

Answer 1

The only 1:1 carbon hydrogen ratio i can think of at top of my head is benzene.

Answer 2

also cyclobutadiene.

Answer 3

but its highly unstable, so not usually seen for long periods of times without switching into something else and forming a more stable product.

Answer 4

A 1:1 ratio for carbon to hydrogen occurs with benzene for example. C6H6. There are 6 hydrogens and 6 carbons. Thus entailing a 1:1 ratio.