Zapisz 4 metodami otrzymywanie: CaCl2 i Na2S
Ca + Cl₂ = CaCl₂ Ca + 2HCl = CaCl₂ + H₂ Ca(OH)₂ + 2HCl = CaCl₂ + 2H₂O CaO + 2HCl = CaCl₂ + H₂O
2Na + H₂S -> Na₂S + H₂ Na₂O + H₂S -> Na₂S + H₂O 2NaOH + H₂S -> Na₂S + 2H₂O 2NaCl + H₂S -> Na₂S + 2HCl
liczę na naj ;d
1.kwas+zasada->sól+woda
2.metal+kwas-->sól+wodór
3.tlenek metalu+kwas->sól+woda
4.metal+niemetal-->sól
chlorek wapnia: CaCl2
1. Ca(OH)2+2HCl-->CaCl2+2H2O
2. Ca+2HCl-->CaCl2+H2
3. CaO+2HCl-->CaCl2+H2O
4. Ca+Cl2-->CaCl2
siarczek sodu: Na2S
1. 2NaOH+H2S-->Na2S+2H2O
2. 2Na+H2S-->Na2S+H2
3. Na2O+H2S-->Na2S+H2O
4. 2Na+S-->Na2S
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Ca + Cl₂ = CaCl₂
Ca + 2HCl = CaCl₂ + H₂
Ca(OH)₂ + 2HCl = CaCl₂ + 2H₂O
CaO + 2HCl = CaCl₂ + H₂O
2Na + H₂S -> Na₂S + H₂
Na₂O + H₂S -> Na₂S + H₂O
2NaOH + H₂S -> Na₂S + 2H₂O
2NaCl + H₂S -> Na₂S + 2HCl
liczę na naj ;d
1.kwas+zasada->sól+woda
2.metal+kwas-->sól+wodór
3.tlenek metalu+kwas->sól+woda
4.metal+niemetal-->sól
chlorek wapnia: CaCl2
1. Ca(OH)2+2HCl-->CaCl2+2H2O
2. Ca+2HCl-->CaCl2+H2
3. CaO+2HCl-->CaCl2+H2O
4. Ca+Cl2-->CaCl2
siarczek sodu: Na2S
1. 2NaOH+H2S-->Na2S+2H2O
2. 2Na+H2S-->Na2S+H2
3. Na2O+H2S-->Na2S+H2O
4. 2Na+S-->Na2S