Question

completati in caiete ecuatiile reactiilor chimice de mai jos si apoi subliniati cu o linie bazele solubile si cu doua linii bazele insolubile.
Na2O + H2O =
NaOH +CuCl2 =
CaO +H2O =
Ca +H2O =
Ca(OH)2 +CO2 =

Answer 1

Na2O+ H2O---> 2NaOH  
2NaOH+ CuCl2---> 2NaCl + Cu(OH)2↓
CaO+ H2O---> Ca(OH)2↓
Ca +2H2O---> Ca(OH)2↓+H2↑
Ca(OH)2 +CO2--->CaCO3 ↓+H2O