Question

Completaţi ecuaţiile următoarelor reacţii:
a) HCl + Zn
b) H 2 SO 4 + CuO
c) HNO 3 + NaOH
d) H 2 SO 4 + Cu(OH) 2
e) HCl + CaCO 3
f) Ca(OH) 2 + CO 2
g) NaOH + HCl
h) NaOH + CuSO 4

Answer 1

Răspuns:

a) HCl + Zn→ZnCl2 + H2↑

b) CuO + H2SO4 → CuSO4 + H2O

c) NaOH  + HNO3→ NaNO3  + H2O

d) H2SO4 + Cu(OH)2 → CuSO4 + 2 H2O

e)  2HCl +  CaCO3 → CaCl2 + H2O + CO2

f) CaOH2 + 3CO2 → CaCO3 + H2O

g) NaOH + HCl → NaCl + H2O

h) CuSO4 + 2 NaOH → Cu(OH)2 + Na2SO4

Explicație:

Answer 2

2HCl+Zn=ZnCl2+H2
H2SO4+CuO=CuSO4+H2O
HNO3+NaOH=NaNO3+H2O
H2SO4+Cu(OH)2=CuSO4+2H2O
2HCl+CaCO3=CaCl2+CO2+H2O
Ca(OH)2+CO2=CaCO3+H2O
NaOH+HCl=NaCl+H2O
2NaOH+CuSO4=Cu(OH)2+Na2SO4