Please help me I am in the late night slump. 9. (6) Of the following reactions,

Question

Please help me I am in the late night slump. 9. (6) Of the following reactions, I has a smaller K. Construct a statement about relative stabslity of multidentate ligand complexes and briefly explain why the K for #I is smaller than the K for K for #1 is smaller than the K for s2 610 The concentration of F e in a slution can be determined by two diferent methods. Method l involves reacting the Fe" in the solution with standard l, and titrating the evcessi , with standard thiosulfate tractions1 and 2 below). Method 2 involves a direct titration of the iron solution with a permanganate solution (reaction 3 below). can be detcermined by two different methods. Method I involves reacting the

Explanation / Answer

10) Fe2+ is oxidised to Fe3+

     MnO4- is reduced to Mn2+

( Oxidation number of Mn in MnO4- is +7 where as in Mn2+ is +2 )

Hence,

oxidised species = Fe2+

reduced species = MnO4-

14) Oxidation number of Mn in MnO4- is +7.

    We know that oxidation number of O = -2

      Mn+ 4 (-2) = -1

      Mn = -1 +8 = +7

Therefore,

Oxidation number of Mn in MnO4- = +7

16)

The reagent in purple color = KMnO4 (Potassium permanganate)

17)

Fe2+ reduces MnO4- is reduced to Mn2+.

Hence,

reducing agent = Fe2+

  

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