Question

Se da schema:
NaCl+H2O->a+b+c
Na+e->a+b
a+HCl->NaCl+c
NaCl+AgNO3->f+g
a+H2SO4->h+c
h+BaCl2->i+NaCl
a+CuSO4->j+h
a+FeCl2->k+NaCl
a+FeCl3->l+NaCl
CuCO3->m+n
m+e->o
o+n->p+e

Answer 1

2NaCl + 2H2O = 2NaOH + H2 + Cl2 (degaja Cl și H)
2Na + 2H2O = 2NaOH + H2 (degaja)
NaOH + HCL = NaCl + H2O
NaCl + AgNO3 = NaNO3 + AgCl (depune)
2NaOH + H2SO4= Na2SO4 + 2H2O
Na2SO4 + BaCl2 = 2NaCl+ BaSO4 (depune)
2NaOH + CuSO4 = Cu(OH)2 + Na2SO4
2NaOH + FeCl2 = Fe(OH)2 + 2NaCl
FeCl3 + 3NaOH = Fe(OH)3 + 3NaCl
CuCO3 = CuO + CO2 (degaja)
CO2 + H2O = H2CO3
H2CO3 + CuO = CuCO3 + H2O

Succes !