K₂O => KOH => KNO₃ => K₂SO₄
K₂O + H₂O => 2KOH
KOH + HNO₃ => KNO₃ + H₂O
2KNO₃ + H₂SO₄ =>(нагревание) 2HNO₃↑ + K₂SO₄
K₂O => KOH => KNO₃ => K₂SO₄
K₂O + H₂O => 2KOH
KOH + HNO₃ => KNO₃ + H₂O
2KNO₃ + H₂SO₄ =>(нагревание) 2HNO₃↑ + K₂SO₄