Podaj po 5 sposobów otrzymywania:
a) fosforanu (V) wapnia - Ca₃(PO₄)₂
b) siarczku glinu - Al₂S₃
a) fosforanu (V) wapnia - Ca₃(PO₄)₂
b) siarczku glinu - Al₂S₃
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3CaO + 2H₃PO₄ --> Ca₃(PO₄)₂ + 3H₂O
3Ca(OH)₂ + 2H₃PO₄ --> Ca₃(PO₄)₂ + 6H₂O
6Ca(OH)₂ + P₄O₁₀ --> 2Ca₃(PO₄)₂ + 6H₂O
6CaO + P₄O₁₀ --> 2Ca₃(PO₄)₂
b) 2Al + 3H₂S --> Al₂S₃ + 3H₂
Al₂O₃ + 3H₂S --> Al₂S₃ + 3H₂O
Al(OH)₃ + H₂S --> Al₂S₃ + H₂O
2AlCl₃ + 3H₂S --> Al₂S₃ + 6HCl
2AlCl₃ + 3K₂S --> Al₂S₃ + 6KCl