a)1. 2NaOH + H₂S ---> Na₂S + 2H₂O2. Na₂O + H₂S ---> Na₂S + H₂O3. 2Na + H₂S ---> Na₂S + H₂
b)1. 3Ca(OH)₂ + 2H₃PO₄ ---> Ca₃(PO₄)₂ + 6H₂O2. 3CaO + 2H₃PO₄ ---> Ca₃(PO₄)₂ + 3H₂O3. 3Ca + 2H₃PO₄ ---> Ca₃(PO₄)₂ + 3H₂
a)
2Na + H₂S --> Na₂S + H₂
2NaOH + H₂S --> Na₂S + 2H₂O
Na₂O + H₂S --> Na₂S + H₂O
b)
3Ca + 2H₃PO₄ --> 2Ca₃(PO₄)₂ + 3H₂
3Ca(OH)₂ + 2H₃PO₄ --> Ca₃(PO₄)₂ + 6H₂O
3CaO + 2H₃PO₄ --> Ca₃(PO₄)₂ + 3H₂O
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a)
1. 2NaOH + H₂S ---> Na₂S + 2H₂O
2. Na₂O + H₂S ---> Na₂S + H₂O
3. 2Na + H₂S ---> Na₂S + H₂
b)
1. 3Ca(OH)₂ + 2H₃PO₄ ---> Ca₃(PO₄)₂ + 6H₂O
2. 3CaO + 2H₃PO₄ ---> Ca₃(PO₄)₂ + 3H₂O
3. 3Ca + 2H₃PO₄ ---> Ca₃(PO₄)₂ + 3H₂
a)
2Na + H₂S --> Na₂S + H₂
2NaOH + H₂S --> Na₂S + 2H₂O
Na₂O + H₂S --> Na₂S + H₂O
b)
3Ca + 2H₃PO₄ --> 2Ca₃(PO₄)₂ + 3H₂
3Ca(OH)₂ + 2H₃PO₄ --> Ca₃(PO₄)₂ + 6H₂O
3CaO + 2H₃PO₄ --> Ca₃(PO₄)₂ + 3H₂O
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Litterarum radices amarae sunt, fructus iucundiores
Pozdrawiam :)