Map a Sapling Learning Shown below are chromatograms for the separation of compo

Question

Map a Sapling Learning Shown below are chromatograms for the separation of compounds A and B obtained at the same flow rate from two different columns of equal length. The void time, , is equal to 1.75 min on each column. Column 1 Column 2 10 Time (min) 20 25 What is the value of the adjusted relative retention for the two compounds separated using column 2? Number Scroll down to view the enitre problem a larger retention factor? O Compound B O They are the same Which compound has a smaller partition coefficient? O They are the same Previous Give Up & View Solution9 Check Answer 0 Next Exit Hint

Explanation / Answer

Relative retention (a) is the ratio of capacity factors (k) or adjusted retention times (tr) for two analytes.

By convention, a > 1.

The relative retention factor is same in both the cases. This is because the retention times are same.

The compound B, however, has a higher retention factor (it elutes later) than A.

The compound B has a greater partition coefficient.

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