Science_Chemistry

• Y_Shun

  16 Oct 07, 22:45

  
• lpx88

  16 Oct 07, 23:04

  ABD
  
  B
  
  Forgot.
• Y_Shun

  16 Oct 07, 23:17

  actually i want to ask c) more
• hisoka

  16 Oct 07, 23:20

  Originally posted by Y_Shun:

  actually i want to ask c) more

  use organic solvents instead of water
• metalcar

  17 Oct 07, 20:06

  can just write solvents instead of organic solvent ? =/
  
  lol
• dbowie

  17 Oct 07, 20:08

  organic solvent and solvent is diff leh.
  water is also a solvent.
  
  i think a) A
  b) b
  c) use organic solvent.
• Y_Shun

  17 Oct 07, 20:27

  can elaborate more abt the organic solvent thingy?
• Hocklez

  17 Oct 07, 20:29

  actually, why u don just mark all the questions u guys donno and ask ur tutors in one shot? faster right?
• ^tamago^

  17 Oct 07, 20:34

  Originally posted by Y_Shun:

  can elaborate more abt the organic solvent thingy?

  since the dye is not soluble in water, it will not travel through it as a medium. instead it requires an organic solvent for it to travel.
  
  since it has been given that there are 2 dyes in B, they will travel at a different speed due to a different solubility. however, we need an organic solvent for them to travel and seperate in the first place.
• dbowie

  17 Oct 07, 20:46

  ok.
  ionic substance is insoluble in organic sub but not water
  covalent sub. is soluble in organic sub but not water
  so same sub. solubility diff.
  u get it ?
• Coffee Gabriel

  22 Oct 07, 16:24

  1)ABD
  2)B
  3)Ethanol
• wonderamazement

  22 Oct 07, 23:47

  Originally posted by ^tamago^:

  since the dye is not soluble in water, it will not travel through it as a medium. instead it requires an organic solvent for it to travel.
  
  since it has been given that there are 2 dyes in B, they will travel at a different speed due to a different solubility. however, we need an organic solvent for them to travel and seperate in the first place.

  Any example of an organic solvent?
• hisoka

  22 Oct 07, 23:50

  chloroform is i'm not wrong.
• ^tamago^

  22 Oct 07, 23:52

  Originally posted by wonderamazement:

  Any example of an organic solvent?

  ethanol or methanol also can.
• KuraKura

  23 Oct 07, 13:25

  hmm... i was thinking, it's the level of water
  say, is you give more distance (or space) for it, you might see them separate from each other? hehe.. my lazy-to-think-a-lot brain thinks so.