Chromatography Question .. HEEEELP

[dark0gamer]

Wasssup again xD

i need an answer to this question :/


Why The Level Of The solvent Is Below The Base-line??

nd

WHy Must The Starting Line Be Drawn In Pencil Not in Ink ?? .. IS it ... To Prevent Mixing Of the solvent with the ink? ?

thanks in advance =)

 

[CommonSense]

The ink as u know is a mixture of colours so it would spread on the chromatography paper. Pencil lead is insoluble.

 

[CommonSense]

The chromatography paper also should not touch the walls of the container lol
Read this it is very useful: http://www.lethbridgecollege.net/elearningcafe/images/stories/pdf/chm075_chromatography.pdf

 

[CommonSense]

The solvent must be below the datum line so that the sample on the line does not dissolve in the solvent; and that means that u lost ur sample.

 

[princemaazthefinal]

yes commonsense is absolutely correct. pencil is used because its lead is insoluble because if you use ink it will spread on the crhomatogrphy paper. and the solvent must be below the solvent line so that the sample on the datum line does not dissolve. well done commonsense! :good:

 

[dark0gamer]

@CommonSense ... DUDE .. i owe u alot .. thxxx much man ..couldnt even find it in google .xD ... thx again =)
@princemaazthefinal .. ur majesty thxx xD

 

[princemaazthefinal]

@CommonSense ... DUDE .. i owe u alot .. thxxx much man ..couldnt even find it in google .xD ... thx again =)
@princemaazthefinal .. ur majesty thxx xD

anytime buddy!