Question

6. Other than a liquid solvent, what could function as the mobile phase in chromatography? 7. Why was it necessary to treat the chromatogram with DMG and ammonia? 8. Why did you use pencil to draw the bottom line instead of ink? 9. What caused the streaking of color near the staple in the chromatograms? 10. What would you observe on a chromatogram if two ions in your unknown had very similar Rf values?

Answer 1

Ans 6 :

The mobile phase in chromatography can be either liquid or gas. So other than a liquid solvent , gas can function as a mobile phase in chromatography.

This mobile phase is passed over the stationary phase , so the components present in stationary phase that are more soluble in the mobile phase component dissolve into it and are carried by the mobile phase to be seperated out.