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ZnCl₂ --- chlorek cynku
K₂CO₃ --- węglan potasu
ZnCl₂ + K₂CO₃ ---> ZnCO₃ + 2KCl
Tu masz zapis jonowy:
Zn²⁺ + 2Cl⁻ + 2Na⁺ + CO₃²⁻ --> ZnCO₃ + 2Na⁺ + 2Cl⁻
I jonowy skrócony:
Zn²⁺ + CO₃²⁻ --> ZnCO₃