The standard electrode potential (M³⁺/M²⁺) for V, Cr, Mn, and Co… | JEE Main 2023 Chemistry PYQ

MCQEasyJEE Main 2023 · 29 January, Shift 1Nernst Equation

The standard electrode potential ( $M^{3+}/M^{2+}$ ) for $V$ , $Cr$ , $Mn$ , and $Co$ are $-0.26 \, \text{V}$ , $-0.41 \, \text{V}$ , $+1.57 \, \text{V}$ , and $+1.97 \, \text{V}$ , respectively. The metal ions which can liberate $H_2$ from a dilute acid are:

A
$V^{2+}$ and $Mn^{2+}$
B
$Cr^{2+}$ and $Co^{2+}$
C
$V^{2+}$ and $Cr^{2+}$
D
$Mn^{2+}$ and $Co^{2+}$

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