[SOLVED] paper chromatography

physstudent1

1. The problem statement, all variables and given/known data
Which reagent is the best to develop Mn+2? Briefly explain.


2. Relevant 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


3. 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.

physstudent1

anyone have any idea

chemisttree

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'.

physstudent1

ah ok so then BiO_3 ^-1 would be the best reagent choice :)