How to use substances: H2O2, Cu, HCI, Zn, S and the products of their interaction to get the maximum

| May 1, 2021 | education

How to use substances: H2O2, Cu, HCI, Zn, S and the products of their interaction to get the maximum number of new substances. Write down the equations of the corresponding reactions.

1. Reaction of disproportionation:
2H2O2 = 2H2O + O2.
2. Reactions with copper:
Cu + 2HCl = CuCl2 + H2.
Cu + S = Cu2S t = 300-400 ° C.
Cu + S = CuS t = 25 ° C.
4Cu + O2 = 2Cu2O t = 200 ° C.
2Cu + O2 = 2CuO t = 400-500 ° C.
2Cu + 4HCl + O2 = 2CuCl2 + 2H2O.
CuCl2 + Zn = ZnCl2 + Cu.
CuSO4 + Zn = Cu + ZnSO4.
Cu2S + 2H2O = 2Cu + SO2 + 2H2. t = 600 ° C.
Cu2S + 3O2 = 2Cu2O + 2SO2.
Cu + 2H2SO4 = CuSO4 + 2H2O + SO2.
CuO + H2SO4 = CuSO4 + H2O.
3. Reactions with zinc:
Zn + 2HCl = ZnCl2 + H2.
Zn + S = ZnS.
2Zn + O2 = 2ZnO.
ZnCl2 + H2O = Zn (OH) 2 + HCl.
ZnO + 2HCl = ZnCl2 + H2O.
Zn (OH) 2 + 2HCl = ZnCl2 + 2H2O.
Zn (OH) 2 = ZnO + H2O.
ZnS + 2HCl = ZnCl2 + H2S.
ZnS + O2 = ZnO + SO2.
Zn + H2SO4 = ZnSO4 + H2.
4. Reactions with sulfur:
S + H2 = H2S.
S + O2 = SO2
SO2 + H2O = H2SO3.
2SO2 + O2 = 2SO3 t = 450 ° C.
SO3 + H2O = H2SO4.
3SO3 + H2S = 4SO2 + H2O.
SO3 + HCl = HSO3Cl.
S + 2H2SO4 = 3SO2 + 2H2O.



One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.