Qualitative Analysis - Result Question 19

####19. The brown ring complex compound is formulated as [Fe(H2O)5(NO)+]SO4. The oxidation state of iron is

(a) 1

(b) 2

(c) 3

(d) 0

(1987, 1M)

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Answer:

Correct Answer: 19. (a)

Solution:

  1. The total positive valency is +2 (because the only anion is SO42 ). Therefore, oxidation state of Fe must be +1 .


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