Решить задания в тетради и сдать на проверку до 15.00 Решить реакции ионного обмена:
BaCl2 + Na2SO4→
Na2SO4 + KCl→ KOH + H2SO4→
Na2SO3 + HCl→
Ba(OH)2 + H2SO4→
BaCl2 + Na2SO4→
Fe(OH)3 + K2SO4 →
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