A) starts giving blue colour with indicator
B) ceases to give blue colour with indicator
C) starts giving red colour with indicator
D) ceases to give red colour with indicator.
Correct Answer: B
Solution :
[b]: Fe(II) gives blue colour with \[{{K}_{3}}[Fe{{(CN)}_{6}}]\]but Fe(III) does not. \[3F{{e}^{2+}}+2{{K}_{3}}[Fe{{(CN)}_{6}}]\to \underset{Blue}{\mathop{F{{e}_{3}}[Fe}}\,{{(CN)}_{6}}]+6{{K}^{+}}\]You need to login to perform this action.
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