Which Of The Following Reagents Can Be Used To Distinguish Fe3+ and Fe2+in Aqueous Solution

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Question

Which of the following reagents can be used to distinguish Fe3+ and Fe2+in aqueous solution

Solution

Correct option is

K3[Fe(CN)6] and KSCN

 

Fe3+ 3KSCN → Fe(SCN)3   (red coloured) 

3Fe2+ 2K3[Fe(CN)6] → Fe3[Fe(CN)6]2

  (blue coloured)

Testing

SIMILAR QUESTIONS

Q1

In nitroprusside ion, the iron and NO exists as Fe(II) and rather than Fe(III) and NO. This can be established by

Q2

Oxidation number of Fe in violet coloured complex Na4[Fe(CN)5(NO)S] is

Q3

Complexes [Co(NH3)5SO4]Br and [Co(NH3)5Br]SO4 can be distinguished by

Q4

The coordination number, EAN of the central metal atom and geometry of the complex ion obtained by adding CuSO4 to excess of aqueous KCN are respectively

Q5

The complex [Fe(H2O)5NO]2+ ion has a magnetic moment of 3.87 B.M. This is indicative of the fact that

Q6

Amongst the following ions, which one has the highest paramagnetism?

Q7

Ni(CO)4 and [Ni(NH3)4]2+ do not differ in

Q8

Which of the following statements is not correct?

Q9

The geometry of Ni(CO)4 and [Ni(P Ph3)2] are

Q10

Of the following which is diamagnetic in nature?