Question

1. Li + HOH= 2. Cu+ HCl= 3. Fe+ CuSO4= 4. Ag+ Zn(NO3)2= 5. Fe2 O3 +Al= 6. Cr +Rb (OH2)= 7. Cu +HNO3конц.= 8.Na + H2SO4=

Answer 1

1) 2Li + 2HOH = 2LiOH + H2

2) Cu + 2HCl = CuCl2 + H2

3) Fe + CuSO4 = FeSO4 + Cu

4) реакция не идет

5) Fe2O3 + 2Al = Al2O3 + 2Fe

6) реакция не идет

7) Cu + 4HNO3(конц) = Cu(NO3)2 + 2NO2 + 2H2O

8) 2Na + H2SO4 = Na2SO4 + H2

Answer 2

It looks like you provided a list of chemical reactions. Let's balance each equation and write the products formed in each case:

1. Li + H2O → LiOH + H2
2. Cu + 2HCl → CuCl2 + H2
3. Fe + CuSO4 → FeSO4 + Cu
4. 2AgNO3 + Zn → Zn(NO3)2 + 2Ag
5. Fe2O3 + 2Al → 2Fe + Al2O3
6. 2Cr + 6RbOH → 2Cr(OH)3 + 3Rb2
7. 3Cu + 8HNO3 → 3Cu(NO3)2 + 4H2O + 2NO
8. 2Na + H2SO4 → Na2SO4 + H2

Please note that the last reaction (8) is actually not balanced. I'll provide the correct balanced equation:

8. 2Na + H2SO4 → Na2SO4 + H2