In a half-cell containing $\left[{\mathrm{Tl}}^{3+}\right]=0.1\mathrm{M}$ and $\left[{\mathrm{Tl}}^{+}\right]=0.01\mathrm{M},$ the cell potential is $-1.2496\mathrm{V}$ for the reaction ${\mathrm{Tl}}^{+}⟶{\mathrm{Tl}}^{3+}+2{\mathrm{e}}^{-}$ The standard reduction potential of the ${\mathrm{Tl}}^{3+}|{\mathrm{Tl}}^{+}$ couple at $25°\mathrm{C}$ is

A galvanic cell is composed of two hydrogen electrodes, one of which is a standard one. In which of the following solutions, should the other electrode be immersed to get maximum e.m.f. $({\mathrm{K}}_{\mathrm{a}}={10}^{-5}$ for acetic acid and ${\mathrm{K}}_{\mathrm{a}}={10}^{-3}$ for phosphoric acid)

Match List- $\mathrm{I}$ with list-$\mathrm{II}$ and select the correct match.

List-I (Parameter)                                                            List- II (Unit)

a. Conductance                                                              (i) ${\mathrm{Cm}}^{-1}$

b. Specific conductance                                                 (ii) ${\mathrm{Ohm}}^{-1}{\mathrm{cm}}^2{\mathrm{mol}}^{-1}$ 

c. Cell constant                                                              (iii) ${\mathrm{Ohm}}^{-1}$

d. Equivalent conductance                                            (iv) ${\mathrm{Ohm}}^{-1}{\mathrm{cm}}^{-1}$ 

e. Molar conductance                                                    (v)${\mathrm{Ohm}}^{-1} \mathrm{equivalent}{ }^{-1}$