Question

Cho các chất sau: cu,fe,p2o5,al, so2,na2co3,cuso4,al(oh)3,fe2o3,k2o,cao,h2so4. những chất nào tác dụng được với: a)H2O b)HCl

c)CuSO4 d)NaOH

Answer 1

6a) H2O

P2O5 + 3H2O --> 2H3PO4

SO2 + H2O --> H2SO3

K2O + H2O --> 2KOH

CaO + H2O --> Ca(OH)2

b) HCl

Fe + 2HCl --> FeCl2 + H2

2Al + 6HCl --2AlCl3 + 3H2

Na2CO3 + 2HCl --> 2NaCl + CO2 + H2O

Al(OH)3 + 3HCl --> AlCl3 + 3H2O

Fe2O3 + 6HCl --> 2FeCl3 + 3H2O

K2O + 2HCl --> 2KCl + H2O

CaO + 2HCl --> CaCl2 + H2O

c) CuSO4

Fe + CuSO4 --> FeSO4 + Cu

2Al + 3CuSO4 --> Al2(SO4)3 + 3Cu

K2O + H2O --> 2KOH

2KOH + CuSO4 --> K2SO4 + Cu(OH)2

CaO + H2O --> Ca(OH)2

Ca(OH)2 + CuSO4 --> Cu(OH)2 + CaSO4

d) NaOH

6NaOH + P2O5 --> 2Na3PO4 + 3H2O

CuSO4 + 2NaOH --> Cu(OH)2 + Na2SO4

NaOH + Al(OH)3 --> NaAlO2 + 2H2O

K2O + H2O --> 2KOH

CaO + H2O --> Ca(OH)2

2NaOH + H2SO4 --> Na2SO4 + H2O