Optimized Developing Mn+2 - Best Reagent Explained

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Discussion Overview

The discussion centers around identifying the best reagent for developing Mn2+ in a paper chromatography context. Participants explore various chemical reactions involving Mn2+ and different reagents, considering their visual outcomes and solubility.

Discussion Character

  • Homework-related
  • Debate/contested
  • Exploratory

Main Points Raised

  • One participant initially considers the reaction of Mn2+ with oxalate ions (C2O42-) as the best choice due to its product being a solid.
  • Another participant suggests that the reaction involving BiO3-1 might be preferable because it produces an aqueous solution, which could enhance visibility.
  • A third participant emphasizes the importance of color intensity, questioning which reagent would yield the darkest color for better visibility of the spot.
  • A later reply concludes that BiO3-1 would be the best reagent choice based on the previous discussions.

Areas of Agreement / Disagreement

Participants express differing opinions on which reagent is optimal for developing Mn2+. There is no consensus reached, as various factors such as color intensity and product state are debated.

Contextual Notes

Participants have not fully resolved the implications of the different products formed in each reaction, nor have they clarified the significance of the visual outcomes in the context of chromatography.

Who May Find This Useful

This discussion may be of interest to students and practitioners involved in chemistry, particularly those focused on analytical techniques such as chromatography.

physstudent1
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[SOLVED] paper chromatography

Homework Statement


Which reagent is the best to develop Mn+2? Briefly explain.


Homework Equations



Mn^+2 + 2OH- -> Mn(OH)_2 (s)(pale pink)

Mn^+2 + C_2O_4^-2 -> MnC2O4 (s)(pale pink)

2Mn^+2 + [Fe(CN)_6]^-4 -> Mn_2Fe(CN)_6 (s pale green)

2Mn^+2 + 5(BiO_3)^-1 + 14H+ -> 2(MnO_4)^-1 (aq deep purple) + 5Bi^+3 +7H_2O


The Attempt at a Solution


( _ represents subscripts H_2O represents water. )

At first I thought the second choice would be correct because it uses ions that are not found in the experiment at all, however now I am starting to think it is the last choice because it's product is an aqueous and not a solid, I would appreciate some feedback, the thing stopping me from thinking the last choice is correct is that it creates 2 other products.
 
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anyone have any idea
 
A dark color makes the spot easier to see. Which one will give the darkest color?
Hint: in this example the word 'pale' can be replaced with 'barely visible'.
 
ah ok so then BiO_3 ^-1 would be the best reagent choice :)