List of top Chemistry Questions on Electrochemistry asked in KCET

During the electrolysis of acidified water, 16 g of O\(_2\) gas is formed at anode. The volume of H\(_2\) gas liberated at cathode under STP conditions is

The conductivity of centimolar solution of KCl at 298 K is 0.021 $\Omega^{-1}$ cm$^{-1}$. The resistance of the cell containing the solution at 298 K is 60 $\Omega$. The value of cell constant is

$\Lambda^\circ_m (NH_4OH)$ is equal to ___________

During the electrolysis of acidified water, 16 g of O$_2$ gas is formed. The volume of H$_2$ gas liberated at cathode under STP conditions is

Given below are the half-cell reactions:
$Mn^{2+} + 2e^- \rightarrow Mn$ (E$^\circ$ = -1.18 V)
$Mn^{3+} + e^- \rightarrow Mn^{2+}$ (E$^\circ$ = +1.51 V)
The E$^\circ_{cell}$ for $3Mn^{2+} \rightarrow Mn + 2Mn^{3+}$ will be \textunderscore\textunderscore\textunderscore\textunderscore

The correct statement/s about Galvanic cell is/are:
(a) Current flows from cathode to anode
(b) Anode is positive terminal
(c) If \(E_{\text{cell}} < 0\), then it is spontaneous reaction
(d) Cathode is positive terminal

The resistance of 0.1 M weak acid HA in a conductivity cell is 2 × 10³ Ohm. The cell constant of the cell is 0.78 C m^-1 and \(\lambda_{m}^{\degree}\) of acid HA is 390 S cm² mol^-1. The pH of the solution is

For spontaneity of a cell, which is correct ?

Specific Conductance of 0.1 M HNO₃ is 6.3 x 10^-2 ohm ^-1 cm^-1. The molar conductance of the solution is

The molar conductivity is maximum for the solution of concentration

In fuel cell ___ are used as catalysts.

\(H_{2(g)}+2AgCl_{(s)}⇌2Ag_{(s)}+2HCl_{(aq)}\)
\(E^{\degree}_{cell}\) at 25° C for the cell is 0.22 V. The equilibrium constant at 25° C is

The resistance of 0.01 m KCl solution at 298 K is 1500Ω. If the conductivity of 0.01 m KCl solution at 298 K is 0.1466 × 10^-3 S cm^-1. The cell constant of the conductivity cell in cm^-1 is

Consider the following electrodes
P = Zn²⁺ (0.0001 M)/Zn  Q = Zn²⁺ (0.1 M)/Zn
R = Zn²⁺ (0.01 M)/Zn       S = Zn²⁺ (0.001 M)/Zn
E°Zn/Zn²⁺ = 0.76 V Electrode potentials of the above electrodes in volts are in the order

Give: E0Mn+7|Mn+2 = 1.5 V and E0Mn+4|Mn+2 = 1.2 V, then E0Mn+7|Mn+4 is

An aqueous solution of CuSO4 is subjected to electrolysis using inert electrodes. The pH of the solution will

At a particular temperature, the ratio of molar conductance to specific conductance of 0.01 M NaCl solution is

For a cell reaction involving two electron changes, ${E^{\circ}_{cell} = 0.3 \, V}$ at $ 25^{\circ} C$. The equilibrium constant of the reaction is

By passing electric current, \(NaClO_3\) is converted into \(NaClO_4\) according to the following equation \(Na ClO_3 + H_2 O \rightarrow NaClO_4 + H_2\) How many moles of \(NaClO_4\) will be formed when three Faradays of charge is passed through \(NaClO_3\) ?

Which of the following is incorrect in a galvanic cell ?

In $H_2 - O_2$ fuel cell the reaction occurring at cathode is

How many Coulombs of electricity are required for the oxidation of one mol of water to dioxygen ?

While charging the lead storage battery

For $Cr_2O_7^{-2} + 14H^{+} + 6e^{-} \to 2Cr^{+3} + 7H_2O; E $$^\circ$= $1.33 V At [Cr_2O_7 ^{-2}] = 4.5$ milli mole $[Cr^{+3}]=15$ milli mole, $E$ is $1.067\, V$.The pH of the solution is nearly equal to