Chemistry-Transition Elements
NEET Chemistry Transition Elements MCQ Question
Type: MCQ-numerical-Medium-Class 12
Given the standard electrode potentials: Cr 2+ /Cr -0.9 V, Cr 3+ /Cr 2+ -0.4 V, Mn 2+ /Mn -1.2 V, Mn 3+ /Mn 2+ +1.5 V, Fe 2+ /Fe -0.4 V, Fe 3+ /Fe 2+ +0.8 V, which of the following statements is correct regarding the stability of oxidation states in acidic solution?
A
Fe 3+ is more stable than Mn 3+.
B
Cr 3+ is less stable than Mn 3+.
C
Cr 2+ is more easily oxidized to Cr 3+ than Fe 2+ to Fe 3+.
D
Mn 2+ is more stable than Cr 3+ in acidic solution.
Correct Answer
Option A
Detailed Explanation
Fe 3+ has a higher E° value compared to Mn 3+, indicating Fe 3+ is more stable in acidic solution.
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