Question

Se da schema de reactii:
1. Cu + a -> CuCl2
2. Cu +b -> CuO
3. CuO + d -> CuCl2 + H2O
4. e -> CuO + H2O
5. CuSO4 + NaOH -> e + Na2SO4
6. Cu+ H2SO4 -> f+ g+ H2O
7. Cu +HNO3 -> h+ i + H2O
8. i + O2 -> NO2
9. Cu+ HCl -> A
10. Cu+ H2SO4 ( diluat ) -> A
se cere:
a) identifica substantele notate cu litere
b) scrie ecuatiile reactiilor chimice
dau coroana
va rog

Answer 1

Cu+Cl2=CuCl2 2Cu+O2=2CuO CuO+2HCl=CuCl2+H2O 2Cu(OH)2=2CuO+H2O CuSO4+2NaOH=Na2SO4+Cu(OH)2 Cu+H2SO4=CuO+SO2+H2O Cu+2HNO3=CuO+2NO2+H2O N2+2O2=2NO2 Cu+2HCl=Cu(HCl)2 Cu+H2SO4=Cu(H2SO4)