New chat PYQ Library Doubts Rank report

Sign in to see Recents

Sign in to save progress →

Electrochemistry question

2025 · 23 Jan · Shift 2 · Q14

Guest · try one question or challengeGuest · try one question or challenge

PYQ Library
JEE Main
Chemistry
Electrochemistry
2025 · 23 Jan · Shift 2 · Q14

Electrochemistry question

2025 · 23 Jan · Shift 2 · Q14

JEE MainChemistryElectrochemistryMCQ+4 / −1

Standard electrode potentials for a few half cells are mentioned below :

\begin{aligned} & \mathrm{E}_{\mathrm{Cu}^{2+} / \mathrm{Cu}}^{\circ}=0.34 \mathrm{~V}, \mathrm{E}_{\mathrm{Zn}^{2+} / \mathrm{Zn}}^{\circ}=-0.76 \mathrm{~V} \\ & \mathrm{E}_{\mathrm{Ag}^{+} / \mathrm{Ag}}^{\circ}=0.80 \mathrm{~V}, \mathrm{E}_{\mathrm{Mg}^{2+} / \mathrm{Mg}}^{\circ}=-2.37 \mathrm{~V} \end{aligned}

Which one of the following cells gives the most negative value of

\Delta \mathrm{G}^{\circ}

?

A
$\mathrm{Zn}\left|\mathrm{Zn}^{2+}(1 \mathrm{M}) \| \mathrm{Ag}^{+}(1 \mathrm{M})\right| \mathrm{Ag}$
B
$\mathrm{Ag}\left|\mathrm{Ag}^{+}(1 \mathrm{M})\right|\left|\mathrm{Mg}^{2+}(1 \mathrm{M})\right| \mathrm{Mg}$
C
$\mathrm{Zn}\left|\mathrm{Zn}^{2+}(1 \mathrm{M})\right|\left|\mathrm{Mg}^{2+}(1 \mathrm{M})\right| \mathrm{Mg}$
D
$\mathrm{Cu}\left|\mathrm{Cu}^{2+}(1 \mathrm{M})\right|\left|\mathrm{Ag}^{+}(1 \mathrm{M})\right| \mathrm{Ag}$

More from Electrochemistry

For the given cell $Fe^{2 +} (aq) + Ag_{(aq)}^{+} \to Fe^{3 +} (aq) + Ag_{(s)}$ The standard cell potential of the above reaction is Given: $Ag^{+} + e^{-} \to Ag Fe^{2 +} + 2 e^{-} \to Fe Fe^{3 +} + 3 e^{-} \to Fe E^{θ} = xV E^{θ} = yV E^{θ} = zV$ …2025 · MCQ
Based on the data given below : $E_{Cr_{2} O_{7}^{2 -} / Cr^{3 +}}^{\circ} = 1.33 V E_{MnO_{4}^{-} / Mn^{2 +}}^{0} = 1.51 V E_{Cl_{2} / Cl^{(-)}}^{\circ} = 1.36 V E_{Cr^{3 +} / Cr}^{\circ} = - 0.74 V$ …2025 · MCQ
Given below is the plot of the molar conductivity vs $concentration$ for KCl in aqueous solution. If, for the higher concentration of KCl solution, the resistance of the conductivity cell is $100Ω$ , then the… Includes diagram2025 · Numerical
Electrolysis of 600 mL aqueous solution of NaCl for 5 min changes the pH of the solution to 12 . The current in Amperes used for the given electrolysis is . (Nearest integer).2025 · Numerical
The standard reduction potential values of some of the p-block ions are given below. Predict the one with the strongest oxidising capacity.2025 · MCQ
For a $M g$ | $M g^{2 +}$ (aq) || $A g^{+}$ (aq) | $A g$ the correct Nernst Equation is :2025 · MCQ
The molar conductivity of a weak electrolyte when plotted against the square root of its concentration, which of the following is expected to be observed?2025 · MCQ
$O_{2}$ gas will be evolved as a product of electrolysis of : (A) an aqueous solution of $AgNO_{3}$ using silver electrodes. (B) an aqueous solution of $AgNO_{3}$ using platinum electrodes. (C) a dilute solution of $H_{2} SO_{4}$ …2025 · MCQ