The temperature dependent standard electrode potential of

fits the expression

​​Molar conductivities of an electrolyte are 100 and 50 mScm² mol^-1​when concentrations are 4 and 9mM, respectively. The limiting molar conductivity of this electrolyte in mScm² mol^-1is closest to​

​$$\text{An aqueous solution contains } 0.02 \, \text{mol kg}^{-1} \, \text{NaCl and } 0.03 \, \text{mol kg}^{-1} \, \text{Ca(NO}_3\text{)}_2. \text{ The logarithm of the mean ionic activity coefficient (log } \gamma_{\pm} \text{) of this solution at 25 °C is.}$$​

The E°(M⁺/M) of the cell, SHE||MX|M can be obtained from the plot of (E_cell is the cell potential and m is the molality of ideal dilute solution of MX)

​

The amount of 

​(molecular weight 261.32 amu) required to be added to 500g of a 0.11

​solution of 

​in order to raise its ionic strength to 1.00 is approximately:

For the cell $$\text{Cd} \, | \, \text{CdCl}_2 \, || \, \text{AgCl} \, | \, \text{Ag} ; \, E^\circ_{\text{cell}} = 0.675 \, \text{V} \, \text{and} \, \frac{dE^\circ_{\text{cell}}}{dT} = - 6.5 \times 10^{-4} \, \text{V K}^{-1} \, \text{at} \, 27^\circ \text{C}. \, \Delta H \, (\text{kJ mol}^{-1}) \, \text{value for the reaction} \, \text{Cd} + 2\text{AgCl} \rightarrow 2\text{Ag} + \text{CdCl}_2 \, \text{is closest to:}$$​

​

For a weak electrolyte such as acetic acid, the relation among conductance λ, equilibrium constant (K) and concentration (C) can be expressed as: (λ⁰​is the conductance at infinite dilution)

​

Consider following terms. Identify those which are relevant to d.c. polarography

A. Thermal current
B. Supporting electrolyte
C. Depolarization
D. Gelatin
Correct answer is

​

What is the cell potential (in V) at 298 K and 1 bar for the following cell?

$$\text{Zn(s)} | \text{ZnBr}_2(aq, 0.20 \, \text{mol}/\text{kg}) || \text{AgBr(s)} | \text{Ag(s)} | \text{Cu(s)} \text{ (given } E^\circ_{\text{Zn}^{2+}/\text{Zn}} = -0.762V, \, E^\circ_{\text{AgBr}/\text{Ag}} = +0.730V, \, \text{and assuming } \gamma^\pm_{\text{ZnBr}_2} = 0.462)$$​

​

The limiting molar conductivities, at 25°C, of few ionic compounds are given in the table below. The limiting molar conductivity of AgI, in units of milli-Siemens $$(metre)^2 mol^{-1},$$ at 25°C is

​

​

Given that at 298.15K, $$E^0_{Fe^{+3}/Fe}=-0.04V;E^0_{Fe^{+2}/Fe}=-0.44V.$$​​At this temperature, the value of  $$E^0_{Fe^{+3}/Fe^{+2}}$$ is