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Complete and balance the redox equations in acidic/basic aqueous solutions.
(a) Acidic aqueous solution: H₂S(aq) + NO₃⁻(aq) → S(s) + NO(g)
(b) Basic aqueous solution: NO₂⁻(aq) + Al(s) → NH₃(aq) + Al(OH)₄⁻(aq)
Constants and equations:
R = 8.314 J/mol·K
F = 96485 J/mol·V
E = Eº - (RT/nF) ln Q