Question

Pls ajutor Am nevoie urgent

Answer 1

8). a = NaOH => 2NaOH + FeCl2 = Fe(OH)2 + 2NaCl

9) a = NaOH => 3NaOH + FeCl3 = Fe(OH)3 + 3NaCl

10). CaCO3 = CaO + Co2

11). e = H2O cred?? => CaO + H2O = Ca(OH)2

12). Ca(OH)2  + CO2 = CaCO3 + H2O