When 0.1 mol MnO$$_4^{2 - }$$ is oxidised the quantity of electricity required to completely oxidise MnO$$_4^{2 - }$$ to MnO$$_4^ - $$ is

Consider the half-cell reduction reaction
Mn²⁺ + 2e^$$-$$ $$ \to $$ Mn, E^o = $$-$$1.18 V
Mn²⁺ $$ \to $$ Mn³⁺ + e^$$-$$, E^o = $$-$$ 1.51 V
The $$E$$^o for the reaction 3 Mn²⁺ $$ \to $$ Mn^o + 2Mn³⁺, and possibility of the forward reaction are respectively

How many gram of cobalt metal will be deposited when a solution of cobalt (II) chloride is electrolyzed with a current of 10 amperes for 109 minutes (1 Faraday = 96,500 C; Atomic mass of Co = 59 u)

At 25^oC molar conductance of 0.1 molar aqueous solution of ammonium hydroxide is 9.54 ohm^$$-$$1 cm² mol^$$-$$1 and at infinite dilution its molar conductance is 238 ohm^$$-$$1 cm² mol^$$-$$1. The degree of ionisation of ammonium hydroxide at the same concentration and temperature is