KOH+ H2SO4(изб) → KHSO4 + H2O
KHSO4+ KOH → K2SO4 + H2O
K2SO4 + BaCl2 → BaSO4↓ + 2KCl
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KOH+ H2SO4(изб) → KHSO4 + H2O
KHSO4+ KOH → K2SO4 + H2O
K2SO4 + BaCl2 → BaSO4↓ + 2KCl