Answer:
Oxidation state of Mn = +4
Explanation:
Atomic mass of Mn = 55g/mol
From Faraday's law of electrolysis,
Electrochemical equivalent = [tex]\frac{mass}{charge}[/tex]
i.e Z = [tex]\frac{m}{Q}[/tex] = [tex]\frac{0.225g}{1580C}[/tex] = 0.0001424 g/C
But Equivalent weight, E = atomic mass ÷ valency = Z × 96,485
⇒ [tex]\frac{55}{valency}[/tex] = 0.0001424 × 96,485
∴ Valency of Mn = +4
