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Ca(OH)₂ + 2 HCl --> CaCl₂ + 2 H₂O
2 KOH + H₂SO₄ --> K₂SO₄ + H₂O
zapis jonowy
Ca²⁺ + 2 OH⁻ + 2 H⁺ + 2 Cl⁻ --> Ca²⁺ + 2 Cl⁻ + 2 H₂O
2 K⁺ + 2 OH⁻ + 2 H⁺ + SO₄²⁻ --> 2 K⁺ + SO₄²⁻ + 2 H₂O
zapis jonowy skrócony
2 OH⁻ + 2 H⁺ --> 2 H₂O
2 OH⁻ + 2 H⁺ --> 2 H₂O
Ca²⁺ + 2OH⁻ + 2H⁺ + 2Cl⁻ ----------> Ca²⁺ + 2Cl⁻ + 2H₂O
2OH⁻ + 2H⁺ ----------> 2H₂O
b) 2KOH + H₂SO₄ ---------> K₂SO₄ + H₂O
2K⁺ + 2OH⁻ + 2H⁺ + SO₄²⁻ ---------> 2K⁺ + SO₄²⁻ + 2H₂O
2OH⁻ + 2H⁺ ---------> 2H₂O