JEE Main · Chemistry

Electrochemistry

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For the Daniell cell $Zn (s) ∣Z n^{2 +} (aq) ∣∣C u^{2 +} (aq) ∣Cu (s)$ , given $E_{Z n^{2 +} /Zn}^{\circ} = - 0.76 V$ and $E_{C u^{2 +} /Cu}^{\circ} = + 0.34 V$ , what is the s…
What is the EMF of the cell $Zn (s) ∣Z n^{2 +} (0.01 M) ∣∣C u^{2 +} (1.0 M) ∣Cu (s)$ at $298 K$ ? ( $E_{cell}^{\circ} = 1.10 V$ , $\frac{2.303 R T}{F} = 0.0591 V$ )
The standard Gibbs free energy change $Δ G^{\circ}$ for a galvanic cell having $E_{cell}^{\circ} = 1.10 V$ and involving transfer of $2 moles$ of electrons is: (…
How many coulombs of electricity are required for the complete reduction of $1 mol$ of $Mn O_{4}^{-}$ to $M n^{2 +}$ in an acidic solution? ( $F = 96500 C/mol$ )
The resistance of a conductivity cell containing $0.01 M KCl$ solution at $298 K$ is $1750 Ω$ . If the conductivity of $0.01 M KCl$ is…
Given the limiting molar conductivities at $298 K$ :
$Λ_{m}^{\circ} (NaCl) = 126.4 S \cdot cm^{2} \cdot mol^{- 1}$
…
The molar conductivity of a $0.025 mol/L$ methanoic acid ( $HCOOH$ ) solution is $46.1 S \cdot cm^{2} \cdot mol^{- 1}$ . If its limiting molar conductivity…
A steady current of $1.50 A$ is passed through an aqueous solution of $CuS O_{4}$ for $20.0 minutes$ . What mass of copper is deposited at the cathode? (Atomic mass of…
What is the equilibrium constant $K_{c}$ at $298 K$ for the cell reaction having $E_{cell}^{\circ} = 0.591 V$ and $n = 1$ ? (Take $\frac{2.303 R T}{F} = 0.0591 V$ )
During the discharging of a lead storage battery, which chemical reaction occurs at the anode?
What products are obtained at the cathode and anode, respectively, during the electrolysis of concentrated aqueous $NaCl$ solution using inert platinum electrodes?
The theoretical thermodynamic efficiency $η$ of a hydrogen-oxygen fuel cell operating at $298 K$ is defined as $\frac{Δ G ^{\circ}}{Δ H ^{\circ}}$ . Given…
Given the standard reduction potentials:
$E_{F e^{3 +} /F e^{2 +}}^{\circ} = + 0.77 V$
$E_{I_{2} / I^{-}}^{\circ} = + 0.54 V$
$E_{A g^{+} /Ag}^{\circ} = + 0.80 V$
Which of t…
According to the Debye-Hückel-Onsager equation for a strong electrolyte, $Λ_{m} = Λ_{m}^{\circ} - A c$ . What is the slope of the plot of $Λ_{m}$ versus $c$ ?
What is the cell potential of the hydrogen concentration cell $Pt, H_{2} (1 atm) ∣ H^{+} (1 0^{- 4} M) ∣∣ H^{+} (1 0^{- 2} M) ∣ H_{2} (1 atm), Pt$ at $298 K$ ? (Take…
The molar conductivity of a $0.05 M$ solution of $AgN O_{3}$ is $100 S \cdot cm^{2} \cdot mol^{- 1}$ . What is the specific conductivity $κ$ of the solution?
Which metal is commonly connected to underground iron pipes to provide cathodic protection against galvanic corrosion?
The amount of substance deposited during electrolysis is directly proportional to which quantity according to Faraday's First Law?
What is the standard potential of a standard hydrogen electrode (SHE) at all temperatures by international IUPAC convention?
How many faradays of charge are required to produce $27.0 g$ of aluminium from molten $A l_{2} O_{3}$ ? (Atomic mass of $Al = 27.0 g/mol$ )
For the half-cell reaction $F e^{3 +} + e^{-} \to F e^{2 +}$ with $E^{\circ} = + 0.77 V$ , what is the potential of the half-cell when $[F e^{3 +}] = 0.1 M$ and…
Which of the following electrolytes exhibits the highest molar conductivity at infinite dilution in aqueous solution at $298 K$ ?
In a dry cell (Leclanché cell), which chemical substance acts as the depolarizer at the cathode to prevent hydrogen gas accumulation?
What happens to the molar conductivity ( $Λ_{m}$ ) of a weak electrolyte solution when it is diluted with water?
Two electrolytic cells containing solutions of $AgN O_{3}$ and $CuS O_{4}$ are connected in series. If $1.08 g$ of silver is deposited in the first cell, what mass of copper is dep…

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