Verified answer

J2+K2SO3+2KOH=K2SO4+2KJ+H2O

J2+2e=2J(-)             -1-восстановление;окислитель,

S(+4)-2e=S(+6)       -1-окисление;восстановитель,

J2+S(+4) = 2J(-) +S(+6)

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