Electrochemistr...

For the half reaction
$$B(s) \rightarrow B^{2+} + 2e^{-}$$         $$E_{1}^{\circ} = - 0.44 V$$
and  $$B_{2}+\rightarrow B^{3+} + e^{-}$$    $$E_{2}^{\circ} = 1.3 V$$
What is $$E^{\circ}$$ for the reaction,
$$3e^{-} + B^{+3} \rightarrow B(s)$$

The weight in grams of $$O_2$$ formed at $$Pt$$ anode during the electrolysis of aq. $$K_2SO_4$$ solution during the passage of one coulomb of electricity is:

The electrolysis of aqueous solution of $$Cu{Br}_{2}$$ using platinum electrode would leads to:

For the reaction:
$$F{ e }^{ 2+ }(aq)+A{ g }^{ + }(aq)\longrightarrow Ag(s)+F{ e }^{ +3 }(aq)$$

The number of coulombs required to deposit $$5.4 g$$ of Aluminium when the given electrode reaction is represented as $$Al^{3+}+3e^- \rightarrow Al$$.

How many faraday charge is required to convert one mole of $${C}_{6}{H}_{5}NO_{2}$$ in to $${C}_{6}H_{5}NH_{2}$$?

Given that $$ { Cl }_{ 2\left( g \right)  }+{ 2e }^{ - }\longrightarrow { 2Cl }^{ - }\left( aq \right)$$ is the reduction half-reaction for the overall reaction $$ 2Ag\left( s \right) +{ Cl }_{ 2 }\left( g \right) \longrightarrow 2AgCl\left( s \right)$$. 

From the following half-cell reaction and their potential, What is the smallest possible standard e.m.f spontaneous reaction?
$${ PO }_{ 4 }^{ 3- } (aq) + 2H_2O(I) + 2e^-  \longrightarrow { HPO }_{3}^{2-} + 3OH^-(aq);  E^o = -1.05 V$$
$$ PbO _2(s) + H_2O(I) + 2e^-  \longrightarrow PbO(S) + 2OH^-(aq);  E^o = +0.28 V$$
$$IO{-}{3}(aq) + 2H_2O(I) + 4e^- \longrightarrow IO^-(aq) + 4OH^-(aq);  E^o = +0.56 V$$

The time taken by the galvanic cell which operates almost ideally under reversible conditions at a current of $${ 10 }^{ -16 }$$ A to deliver 1 mole of electron is:

Which of the following is a strong electrolyte?