{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

Homework solutions for chem 422 chapter 26 10 there

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: for Chem 422 Chapter 26 10. There is a minimum in a plot of plate height versus flow rate because band broadening due to longitudinal diffusion effects decreases with increasing flow rate while broadening due to mobile-phase and stationary-phase mass-transfer effects increases with increasing flow rate. Since longitudinal diffusion is much less a factor in liquid chromatography, the minimum plate height is found at a much lower flow rate than for gas chromatography. 11. Gradient elution is a method used in liquid chromatography in which the composition of the mobile phase is changed continuously or in steps in order to improve separations. 12. The variables that...
View Full Document

{[ snackBarMessage ]}

Ask a homework question - tutors are online