Question

A. Egalati si completati reactiile:
1. Zn+HNO3=
2. Na2O+H2SO4=
3. NaOH+H2SO4= 
4. CaCO3+H2SO4=
5. Zn+HCL=
6. Al+H2SO4=
7. CuO+HNO3=
8. Mg+H2SO4=
9. Fe+HCl=
10. NH3+HCl=
11. Fe+H2SO4=
12. CuCo3+Hno3=

B. Cate g Mg reactioneaza cu 73g solutie de HCL de concetratie 10%?

Answer 1

1) Zn+2HNO₃=Zn(NO₃)₂+H₂
2) Na₂O+H₂SO₄=Na₂SO₄+H₂O
3) NaOH+H₂SO₄= Na₂SO₄+H₂O
4) CaCO₃+H₂SO₄=CaSO₄+CO₂+H₂O
5) Zn+2HCl=ZnCl₂+H₂
6) 2Al+3H₂SO₄=Al₂(SO₄)₃+3H₂
7) CuO+2HNO₃=Cu(NO₃)₂+H₂
8) Mg+H₂SO₄=MgSO₄+H₂
9) Fe+2HCl=FeCl₂+H₂
10) NH₃+HCl=NH₄Cl
11) Fe+H₂SO₄=FeSO₄+H₂
12) CuCO₃+2HNO₃=Cu(NO₃)₂+CO₂+H₂O