ABC26IN1114 · Coordination Chemistry

Subject: Inorganic Chemistry · Chapter: Coordination Chemistry · Topic: Electron Transfer Redox · Exam: NET JUNE 2018 · Marks: 2 · Difficulty: Medium

Consider the statements A - D regarding equation I-III:
\[ \text{(I)}\quad \left[\mathrm{Fe}(\mathrm{CN})_{6}\right]^{3-}+\left[\mathrm{Co}(\mathrm{CN})_{5}\right]^{3-} \rightarrow \left[\mathrm{Fe}(\mathrm{CN})_{6}\right]^{4-}+\left[\mathrm{Co}(\mathrm{CN})_{5}\right]^{2-} \]
\[ \text{(II)}\quad \left[\mathrm{Co}(\text{bipy})_{3}\right]^{2+}+\left[\mathrm{Co}^{*}(\text{bipy})_{3}\right]^{3+} \rightarrow \left[\mathrm{Co}(\text{bipy})_{3}\right]^{3-}+\left[\mathrm{Co}^{*}(\text{bipy})_{3}\right]^{2+} \]
\[ \text{(III)}\quad \left[\mathrm{Co}(\mathrm{NH}_{3})\mathrm{F}\right]^{2+}+\left[\mathrm{Cr}(\mathrm{H}_{2}\mathrm{O})_{6}\right]^{2+} \rightarrow \left[\mathrm{Co}(\mathrm{NH}_{3})_{5}(\mathrm{H}_{2}\mathrm{O})\right]^{2+}+\left[\mathrm{Cr}(\mathrm{H}_{2}\mathrm{O})_{5}\mathrm{F}\right]^{2+} \]
(A) Marcus equation is applicable to I and II. (B) Marcus equation is applicable to II only. (C) Equation I and II involve inner sphere electron transfer. (D) Equation I and III involve inner sphere electron transfer. The correct statements are:
(a)A and B
(c)B and D
(d)C and D
(b)B and C
Answer
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Explanation
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