Determine whether each structure is likely to be colored or not. For those that you predict to be colored, indicate the extended conjugation by marking the series of continuous sp2 hybridized atoms.
(a)

(b)

(c)

(d)

(e)

(f)

(g)

(h)

(i)

(j)

(k)

CI CH3 HO OH O CH COOH HO N-N H3CO N(CH3)2 H3C 3- O HO COO Na NO SO3 Na Cl Cl Cl Cl