Chromatograms of compounds A and B were obtained at the same flow rate with two columns of equal length. (a) Which column has more theoretical plates? (b) Which column has a larger plate height? (c) Which column gives higher resolution? (d) Which column gives a greater relative retention? (e) Which compound has a higher retention factor? (f) Which compound has a greater partition coefficient? (g) What is the numerical value of the unadjusted relative retention?
Hybridization of Atomic Orbitals (cont.) Double bonds consist of one sigma (σ) and one pi (π) bond Acetylene: C2H2 2 π bonds sp hybridized Carbon H C C H linear 1.20A Carbon sp Energy 1s ( 2s x ) y z 2sp Sp hybridized carbon π ½ π P P π σ sp sp C σ C ½ π π ½ π P P π σ