Question

The electroosmotic mobility of a solution in a particular capillary is 1.71 × 10-8 m2/(V·s) at pH 3 and 9.40 × 10-8 m2/(V·s) at pH 11. A 28.6 kV potential is applied across the 67.3-cm-long capillary. How long will it take a neutral molecule to travel the 58.7 cm from the injector to the detector if the solution is buffered

at pH 3? t= S at pH 11? t= S

An anion has an electrophoretic mobility of -2.11 × 10-8 m2/(V·s). Will the anion migrate towards the detector if the solution is buffered

At pH 3?

Yes   

No

Not Enough information to determine

At pH 11?

Yes

No

Not Enough Information to determine

If you determine above that the anion will not migrate towards the detector or that there is not enough information, then leave the time blank below. If you determined the anion will migrate towards the detector, how long will it take the anion to travel from the injector to the detector if the solution is buffered

at pH 3? at pH 11?

t= S t= S

Answer 1