Electrochemistry

In a Daniell cell, what happens to the current flow if an external opposing potential ($E_{ext}$) slightly greater than 1.1 V is applied?.

What is the sign of Gibbs Free Energy ($\Delta G$) for a cell reaction to be spontaneous?.

Why is the Standard Hydrogen Electrode (SHE) potential taken as zero?.

Which material is used as the inert electrode in a Standard Hydrogen Electrode (SHE)?.

What defines an Inert Electrode? Give 2 common examples used in JEE problems.

In the electrochemical series, if $E^\circ$ is highly negative, what does it indicate about the reducing power of the metal?.

What is the relationship between Standard Cell Potential ($E^\circ_{cell}$) and Equilibrium Constant ($K_c$) at 298 K?.

Does the value of $E^\circ_{cell}$ change with the concentration of the electrolyte?.

For the reaction $M^{n+} + ne^- \to M(s)$, how does the electrode potential ($E$) change if the concentration of metal ions is increased?.

What is the value of the cell potential ($E_{cell}$) when the electrochemical cell reaches equilibrium?.

How does the pH of the solution affect the reduction potential of a Hydrogen electrode?.

In the Nernst equation, what does the factor 'n' represent?.

Calculate the potential of a hydrogen electrode in contact with a solution of pH

For a concentration cell (same electrodes, different concentrations $C_1$ and $C_2$), when is the cell potential positive?.

What is the unit of 'Cell Constant' ($G^*$)?.

How is Conductivity ($\kappa$) related to Conductance ($G$) and Cell Constant ($G^*$)?.

Why is Alternating Current (AC) used instead of Direct Current (DC) for measuring the resistance of an electrolytic solution?.

Define Molar Conductivity ($\Lambda_m$) mathematically in terms of $\kappa$ and Molarity ($c$).

While Calculating $\Lambda_m$ if $\kappa$ is in $S \cdot cm^{-1}$ Where does the 1000 go?

While Calculating $\Lambda_m$ if $\kappa$ is in $S \cdot m^{-1}$ Where does the 1000 go?

Why does Conductivity ($\kappa$) decrease upon dilution?.

Why does Molar Conductivity ($\Lambda_m$) increase upon dilution?.

What does the slope represent in the plot of $\Lambda_m$ vs $\sqrt{c}$ for strong electrolytes (Debye-Huckel-Onsager equation)?.

Why can't the Limiting Molar Conductivity ($\Lambda^\circ_m$) of a weak electrolyte be determined by extrapolation of the $\Lambda_m$ vs $$\sqrt{c...

State Kohlrausch's Law of Independent Migration of Ions.

How do you calculate $\Lambda^\circ_m$ for Acetic Acid using Kohlrausch's law?.

According to Faraday's First Law, what determines the mass of substance deposited?.

What is the electrochemical equivalent ($Z$) equal to?.

How much charge is required to reduce 1 mole of $MnO_4^-$ to $Mn^{2+}$?.

During the electrolysis of aqueous NaCl, why is Chlorine gas produced at the anode instead of Oxygen, despite Oxygen having a lower reduction potentia...

What are the products of electrolysis of molten NaCl?.

In the electrolysis of aqueous $H_2SO_4$, what product is formed at the anode at high current density? (Contrast this with the product at low curren...

Does the mass of Copper deposited in electrolytic refining depend on the concentration of $Cu^{2+}$ ions?.

What is the value of 1 Faraday in Coulombs and what does 1F represent?

if 1F is passed through a cell during electrolysis, how much amount of a species will be discharged at the respective electrode?

In a Dry Cell (Leclanché cell), what reaction occurs at the anode?.

Why does a Mercury Cell provide a constant voltage (1.35 V) throughout its life?.

What is the electrolyte used in a Lead Storage Battery?.

During the recharging of a Lead Storage Battery, what happens to the $PbSO_4$ formed on the electrodes?.

What is the anode and cathode in a Nickel-Cadmium cell?.

Which secondary cell has a longer life: Lead Storage or Nickel-Cadmium?.

What is the overall reaction in a Hydrogen-Oxygen Fuel Cell?.

What is the thermodynamic efficiency ($\eta$) formula for a fuel cell?.

Why are fuel cells considered superior to thermal power plants?.

What catalysts are used in the electrodes of a $H_2-O_2$ fuel cell?.

In the electrochemical theory of rusting, what acts as the anode?.

What is the chemical formula of Rust?.

How does Galvanization protect iron from rusting?.

Why does rusting occur faster in saline water?.

What role does $H^+$ play in the rusting of iron?.

What is 'Cathodic Protection' in the context of underground pipes?.

Difference between Primary and Secondary batteries

Electrode Reactions in Dry Cell and Mercury Cell

What are uses of Mercury cell and why?

Give a brief summary of Lead Storage Battery

What are the common fules used in fuel cell ?

Is the Leclanché cell (Dry cell) a primary or secondary battery?.

What effect does increasing temperature have on the conductivity of an electrolyte solution?.

What is the Nernst equation for the cell reaction $aA + bB \to cC + dD$?.

In the context of electrochemical thermodynamics, how do $E_{Cell}$ and $\Delta_r G$ differ as properties?

What is the specific term for the difference between electrode potentials when no current is drawn through the cell?

Under what condition does an electrochemical cell reverse its behavior and act as an electrolytic cell?

Why does the molar conductivity ($\Lambda_m$) of a weak electrolyte like acetic acid ($CH_3COOH$) increase drastically upon dilution?

How much charge (in Faradays) is required to obtain one mole of aluminium from its oxide ($Al_2O_3$)?

Why does the specific conductivity ($\kappa$) of an electrolytic solution decrease when it is diluted?

What happens to the lead sulfate ($PbSO_4$) at the anode during the charging of a lead storage battery?

Why does a mercury cell maintain a constant cell potential throughout its entire useful life?

Why is Alternating Current (AC) used instead of Direct Current (DC) to measure the resistance of an ionic solution?

In the electrolysis of brine (aqueous $NaCl$), why is $Cl_2$ gas produced at the anode instead of $O_2$?

According to standard electrode potentials ($E^\circ$), how do you identify the strongest reducing agent in a series?

Does the cell constant ($G^*$) of a conductivity cell change if you use a different electrolyte or a different temperature?

What primary advantage do fuel cells have over conventional primary and secondary batteries?

Why does the molar conductivity ($\Lambda_m$) of a strong electrolyte like $CH_3COONa$ increase only gradually upon dilution?