The standard electrode potential of $\mathrm{M}^{+} / \mathrm{M}$ in aqueous solution does not depend on

(A) Ionisation of a solid metal atom

(B) Sublimation of a solid metal

(C) Ionisation of a gaseous metal atom

(D) Hydration of a gaseous metal ion

JEE Main · 2023 · 06 Apr 2023 · Shift 1 · Redox Reactions and Electrochemistry

The standard electrode potential of

M^{+} / M

in aqueous solution does not depend on

(A)Ionisation of a solid metal atom✓ Correct
(B)Sublimation of a solid metal
(C)Ionisation of a gaseous metal atom
(D)Hydration of a gaseous metal ion

Answer: (A)

Solution

The standard electrode potential of

M^{+} /M

is built from a thermodynamic cycle: the solid metal is first sublimed to gaseous atoms, these gaseous atoms are then ionised to gaseous ions, and the gaseous ions are finally hydrated. Ionisation is defined for the gaseous atom, not the solid, so there is no step that ionises a solid metal atom. The electrode potential therefore does not depend on ionisation of a solid metal atom.

JEE Main · 2023 · 06 Apr 2023 · Shift 1 · Single correct option

Practise more: all JEE Main PYQs on Redox Reactions and Electrochemistry →

More JEE Main questions on Redox Reactions and Electrochemistry

The pH and conductance of a weak acid (HX) was found to be 5 and $4 \times 1 0^{- 5} S$ , respectively. The conductance was measured under standard condition using a cell where the electrode plates having a surface area of $1 cm^{2}$ were at a distance of 15 cm a …
JEE Main 2026View solution →
Consider the following electrochemical cell at 298 K
$Pt HSnO_{2}^{-} (aq) Sn (OH)_{6}^{2 -} (aq) ∣ Bi_{2} O_{3} (s) ∣ Bi (s)$ .
If the reaction quotient at a giv …
JEE Main 2026View solution →
Aqueous HCl reacts with $MnO_{2} (s)$ to form $MnCl_{2} (aq)$ , $Cl_{2} (g)$ and $H_{2} O (l)$ . What is the weight (in g) of $Cl_{2}$ liberated when 8.7 g of $MnO_{2} (s)$ is reacted w …
JEE Main 2026View solution →
For a closed circuit Daniell cell, which of the following plots is the accurate one at a given temperature?
JEE Main 2026View solution →
MX is a sparingly soluble salt that follows the given solubility equilibrium at 298 K
$MX (s) ⇌ M^{+} (aq) + X^{-} (aq)$ ; $K_{sp} = 1 0^{- 10}$
If the standard reduction potential for …
JEE Main 2026View solution →
Consider the following reduction processes:
$Al^{3 +} + 3 e^{-} \to Al (s), E^{\circ} = - 1.66 V$
$Fe^{3 +} + e^{-} \to Fe^{2 +}, E^{\circ} = + 0.77 V$ …
JEE Main 2026View solution →