Electrochemistry

Identify the overall oxidation reaction that occurs in lead storage cell during discharge.

Calculate \(\mathrm{E}_{\text {cell }}^0\) if the equilibrium constant for following reaction is \(1.2 \times 10^6\).
\(2 \mathrm{Cu}_{(\mathrm{aq})}^{+} \longrightarrow \mathrm{Cu}_{(\mathrm{aq})}^{++}+\mathrm{Cu}_{(\mathrm{s})}\)

Calculate \(E^{\circ}\) cell for following.
\(\mathrm{Zn}(s)\left|\mathrm{Zn}^{++}(1 \mathrm{M}) \| \mathrm{Pb}^{++}(1 \mathrm{M})\right| \mathrm{Pb}(s)\) if \(E_{\mathrm{Zn}}^{\circ}=-0.763 \mathrm{~V}\) and $$E_{\mathrm{Pb}}^{\circ}=-0.12...

What is the molar conductivity of \(0.005 \mathrm{~M} \mathrm{~NaI}\) solution if it's conductivity is
\(6.065 \times 10^{-4} \Omega^{-1} \mathrm{~cm}^{-1} \text { ? }\)

Which from the following expression represents molar conductivity of an electrolyte \(\mathrm{A}_2 B_3\) type?

Which from following is strongest reducing agent?

Electrolytic cells containing \(\mathrm{Zn}\) and \(\mathrm{Al}\) salt solutions are connected in series. If \(6.5 \mathrm{~g}\) of \(\mathrm{Zn}\) is deposited in one cell calculate mass of \(\mathrm{Al}\) deposited in second cell (molar m...

Calculate \(\Delta \mathrm{G}^{\circ}\) for the reaction \(\mathrm{Mg}_{(\mathrm{s})}+\mathrm{Sn}_{(\mathrm{aq})}^{++} \longrightarrow \mathrm{Mg}_{(\mathrm{aq})}^{++}+\mathrm{Sn}_{(\mathrm{s})}\) if \(\mathrm{E}_{\text {cell }}^0\) is $$2....

A conductivity cell containing \(5 \times 10^{-4} \mathrm{~M} \mathrm{~NaCl}\) solution develops resistance \(14000 \mathrm{~ohms}\) at \(25^{\circ} \mathrm{C}\). Calculate the conductivity of solution if the cell constant is $$0.84 \mathrm...

Calculate the \(\mathrm{E}_{\text {cell }}\) for \(\mathrm{Zn}_{(\mathrm{s})}\left|\mathrm{Zn}_{(0.1 \mathrm{M})}^{++}\right|\left|\mathrm{Cr}_{(0.1 \mathrm{M})}^{+++}\right| \mathrm{Cr}_{(\mathrm{s})}\) at \(25^{\circ} \mathrm{C}\) if $$\m...

Which of the following expressions represents molar conductivity of \(\mathrm{AB}_3\) type electrolyte?

Which among the following is CORRECT formula for determination of cell constant?

The molar conductivity of \(0.02 \mathrm{~M} \mathrm{~AgI}\) at \(298 \mathrm{~K}\) is \(142.3 \Omega^{-1} \mathrm{~cm}^2 \mathrm{~mol}^{-1}\). What is its conductivity?

Find the number of faradays of electricity required to produce \(45 \mathrm{~g}\) of \(\mathrm{Al}\) from molten \(\mathrm{Al}_2 \mathrm{O}_3\).
(At. mass of \(\mathrm{Al}=27\) )

Calculate the \(\mathrm{E}_{\text {cell }}^{\circ}\) for \(\mathrm{Zn}_{(\mathrm{s})}\left|\mathrm{Zn}_{(\mathrm{IM})}^{++}\right|\left|\mathrm{Cd}_{(\mathrm{IM})}^{++}\right| \mathrm{Cd}_{(\mathrm{s})}\) at $$25^{\circ} \mathrm{C}\left[\ma...

Which from following sentences is NOT correct?

What mass of \(\mathrm{Mg}\) is produced during electrolysis of molten \(\mathrm{MgCl}_2\) by passing \(2 \mathrm{~amp}\) current for 482.5 second?
(Molar mass \(\mathrm{Mg}=24 \mathrm{~g} \mathrm{~mol}^{-1}\))

Which of the following is NOT a difficulty in setting SHE?

Conductivity of a solution is \(1.26 \times 10^{-2} \Omega^{-1} \mathrm{~cm}^{-1}\) Calculate molar conductivity for \(0.01 \mathrm{~M}\) solution.

Calculate the conductivity of \(0.02 \mathrm{~M}\) electrolyte solution if its molar conductivity \(407.2 \Omega^{-1} \mathrm{~cm}^2 \mathrm{~mol}^{-1}\) ?

Calculate \(E_{\text {cell }}^{\circ}\) in which following reaction occurs. \(\mathrm{Mg}_{(\mathrm{s})}+2 \mathrm{Ag}_{(\mathrm{IM})}^{+} \rightarrow \mathrm{Mg}_{(1 \mathrm{M})}^{+}+2 \mathrm{Ag}_{(\mathrm{s})}\) if $$\mathrm{E}_{\mathrm{...

What happens when solution of an electrolyte is diluted?

Calculate \(\wedge_0\) of \(\mathrm{CH}_2 \mathrm{ClCOOH}\) if \(\wedge_0\) for \(\mathrm{HCl}, \mathrm{KCl}\) and \(\mathrm{CH}_2 \mathrm{ClCOOK}\) are \(4.2,1.5\) and \(1.1 \Omega^{-1} \mathrm{~cm}^2 \mathrm{~mol}^{-1}\) respectively?

Which of the following is NOT an example of secondary voltaic cell?

How long will it take to produce \(5.4 \mathrm{~g}\) of \(\mathrm{Ag}\) from molten \(\mathrm{AgCl}\) by passing \(5 \mathrm{~amp}\) current?
(Molar mass Ag = \(108 \mathrm{~g} \mathrm{~mol}^{-1}\) )

The conductivity of \(0.04 \mathrm{~M} \mathrm{~BaCl}_2\) solution is \(0.0112 \Omega^{-1} \mathrm{~cm}^{-1}\) at \(25^{\circ} \mathrm{C}\). What is it's molar conductivity?

Which from the following is the correct relationship between standard Gibbs energy change and standard cell potential?

The resistance of \(0.2 \mathrm{M}\) solution of an electrolyte is 30 ohm and conductivity is \(1.2 \mathrm{~S} \mathrm{~m}^{-1}\). What is the value of cell constant?

What is the charge required for the reduction of moles of Cu\(^{2+}\) to Cu?

The electrical conductance of unit volume (1 cm\(^3\)) of solution is called as

What is the conductivity of 0.02 M HCl solution if molar conductivity of the solution at 25\(^\circ\)C is 412.3 \(\Omega^{-1}\) cm\(^{-1}\) mol\(^{-1}\) ?

How many electrons flow through the wire if a current of 1.5 ampere flow through it for 3 hours?

In the cell represented as \(\mathrm{Ni}_{(\mathrm{s})}\left|\mathrm{Ni}_{(\mathrm{IM})}^{2 \oplus}\right|\left|\mathrm{Ag}_{(\mathrm{IM})}^{\oplus}\right| \mathrm{Ag}_{(\mathrm{s})}\), the reducing agent is

The conductivity of \(0.3 \mathrm{M}\) solution of \(\mathrm{KCl}\) at \(298 \mathrm{~K}\) is \(0.0627 \mathrm{~S} \mathrm{~cm}^{-1}\). What is it's molar conductivity?

During the electrolysis of fused \(\mathrm{NaCl}\), the product obtained at anode is

The conductivity of \(0.012 \mathrm{~M} \mathrm{~NaBr}\) solution is \(2.67 \times 10^{-4} \mathrm{~S} \mathrm{~cm}^{-1}\). What is it's molar conductivity?

What is the weight of \(\mathrm{Al}\) deposited at cathode when 1 ampere current is passed through molten \(\mathrm{AlCl}_3\) for 9650 seconds? (At mass of \(\mathrm{Al}=27\))

Which from following electrolytes, molar conductivity is determined using Kohlrausch theory?

Molar conductivity of 0.04 M BaCl\(_2\) solution is 230 \(\Omega^{-1}\) cm\(^2\) mol\(^{-1}\) at 27\(^\circ\)C. What is it's conductivity?

What is the resistance of \(0.01 ~\mathrm{M} ~\mathrm{KCl}\) solution if its conductivity is \(200 ~\mathrm{ohm}^{-1} \mathrm{cn}^{-1}\) and cell constant is \(1 \mathrm{~cm}^{-1}\) ?

How many Faraday of electricity is required to deposit \(0.8 \mathrm{~g}\) of calcium at cathode by the electrolysis of \(\mathrm{CaCl}_2\) ?
(Molar mass of \(\mathrm{Ca}=40 \mathrm{~g} \mathrm{~mol}^{-1}\))

What is the conductivity of \(0.02 \mathrm{~M} \mathrm{~KCl}\) solution if cell constant is \(1.29 \mathrm{~cm}^{-1}\) with resistance 645 \(\Omega\) ?

Electrical conductance due to all the ions in \(1 \mathrm{~cm}^3\) of given solution is called as

What is the number of electrons passed through an electrolyte solution when 1 ampere current is passed for 16.1 minutes?

The molar conductivity of \(0.4 \mathrm{~M} \mathrm{~KCl}\) solution is \(2.5 \times 10^5 \Omega^{-1} \mathrm{~cm}^2 \mathrm{~mol}^{-1}\). What is the resistivity of solution?

Which among the following statements is true for conductivity?

What is the number of moles of electrons passed when current of 5 ampere is passed through a solution of FeCl\(_3\) for 20 minutes?

What will be the concentration of solution of electrolyte if it's molar conductivity and conductivity are respectively 230 \(\Omega^{-1}\) cm\(^2\) mol\(^{-1}\) and 0.0115 \(\Omega^{-1}\) cm\(^{-1}\) at 298 K?

Which among the following statements is true for Galvanic cell?

A conductivity cell shows resistance of 600 ohm. If conductivity of 0.01 M KCl is 0.0015 \(\Omega^{-1}\) cm\(^{-1}\), what is cell constant?