pH, Ksp and complex formation from cell potentials

10 questions on pH, Ksp and complex formation from cell potentials from the Electrochemistry chapter: 2 NEET level, 3 JEE Main, 5 JEE Advanced. Each one opens with its answer and solution.

• The reduction potential of a hydrogen electrode (p_H2 = 1 bar) in a buffer of pH 5 at 298 K is (take 2.303RT/F = 0.0591 V) NEET level
• Solid NaCl is added to the solution of a Ag+/Ag half cell until AgCl precipitates. The electrode potential NEET level
• E deg(Ag+/Ag) = 0.800 V and E deg(AgBr/Ag,Br-) = 0.071 V at 298 K. The value of pK_sp = -log K_sp for AgBr is closest to (take 2.303RT/F = 0.0591 V) JEE Main level
• The cell Pt | H2 (1 bar) | buffer solution || Cu^2+ (1 M) | Cu has EMF 0.537 V at 298 K. Given E deg(Cu^2+/Cu) = 0.34 V and 2.303RT/F = 0.0591 V, the pH of the ... JEE Main level
• E deg(Ag+/Ag) = 0.80 V and E deg for [Ag(NH3)2]+ + e- -> Ag + 2NH3 is 0.37 V at 298 K. The formation constant K_f of [Ag(NH3)2]+ is closest to (take 2.303RT/F =... JEE Main level
• A silver electrode is dipped in 0.1 M AgNO3 at 298 K. K_sp(AgCl) = 1.8 x 10^-10, K_sp(AgBr) = 5 x 10^-13. Which statements are correct? JEE Advanced level
• The cell Ag | AgX(s) | KX (0.1 M) || AgNO3 (0.1 M) | Ag, where AgX is a sparingly soluble silver salt, has EMF 0.480 V at 298 K with the left electrode as anode... JEE Advanced level
• A hydrogen electrode (p_H2 = 1 bar) dipped in 0.10 M solution of a weak monobasic acid HA is coupled with a standard hydrogen electrode. The EMF is 0.1477 V at ... JEE Advanced level
• E deg(Cu^2+/Cu) = 0.34 V and K_sp[Cu(OH)2] = 1.0 x 10^-20 at 298 K. The standard potential of the half reaction Cu(OH)2(s) + 2e- -> Cu + 2OH- is (take 2.303RT/F... JEE Advanced level
• Given E deg(Ag+/Ag) = 0.80 V, K_sp(AgI) = 1.0 x 10^-16 and 2.303RT/F = 0.0591 V at 298 K. Which statements are correct? JEE Advanced level