Practice exercise

2) Why are the products attached to C3 of 1,4 pentadiene more acidic
than the methyl hydrogen atoms of propene?

Maybe you can help me with this one. Are the C3 atoms more acidic
because there is more s character involved with the atoms and as the s
character increases, the bond length decreases and the carbon becomes
more electronegative which ultimately leads to more acidic qualities.

3) Dehydrohalogenation of 1,2-dihalides (with the elimination of two
molar equivalents of HX) normally leads to an alkyne rather than to a
conjugated diene. However, when 1,2 dibromocyclohexane is
dehydrohalogenated, 1,3-cyclohexadiene is produced in good yield. What
factor accounts for this?

Well I drew the structures out and I am clueless. I tried researching
this scenario on the internet and couldn’t find anything that helped.
My textbook is no help either.