A GC column is operated under the following conditions: Column: 1.10 m x 2 mm packed with Chromosorb P and Carbowax 20M as stationary phase. The following retention times were obtained: air: 18.0 sec; methylacetate: 2.98 min; methyl propionate: 4.56 min.
Peak width at half height: methylacetate: 7.7 sec; methyl propionate: 12.4 sec.
Calculate: a) the corrected retention time for each solute. b) the capacity factor k' for each solute. c) the selectivity factor α for the pair of solutes.
d) the number of theoretical plates and plate height for the column (for each solute).
a) The retention time of air = (18/60) min = 0.3 min
The corrected retention time for methyl acetate = 2.98 min - 0.3 min = 2.68 min
The corrected retention time for methyl propionate = 4.56 min - 0.3 min = 4.26 min
b) The capacity factor for methyl acetate = 2.68 min/0.3 min = 8.933
The capacity factor for methyl acetate = 4.26 min/0.3 min = 14.2
c) The selectivity factor (α) for the pair of solutes = 4.26 min/2.68 min = 1.590
A GC column is operated under the following conditions: Column: 1.10 m x 2 mm packed...