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2Cu + O2 ---> 2CuO
CuO + HCl ---> CuCl2 + H2O
CuCl2 + Ba(OH)2 ---> Cu(OH)2 + BaCl2
Cu(OH)2 ---to--> CuO + H2O
CuO + SO3 ---> CuSO4
CuSO4 + Pb(NO3)2 --->Cu(NO3)2 + PbSO4
em tham khảo nha
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PTHH:
Cu + H2SO4 → H2 + CuSO4
CuSO4 + BaCl2 → BaSO4 + CuCl2
CuCl2 + Ba(OH)2 → BaCl2 + Cu(OH)2
Cu(OH)2 \(\underrightarrow{t^0}\) H2O + CuO
2CuO \(\underrightarrow{t^0}\) 2Cu + O2
Cu + H2SO4(ĐẶC NÓNG) -\(t^O\)> CuSO4 + 2H2O + SO2
CuSO4 + BACL2 -> CuCL2 + BASO4
CuCL2 + Pb(OH)2 -> Cu(OH)2 + PbCL2
Cu(OH)2 -\(t^O\)> CuO + H2O
CuO + H2 -\(t^O\)> Cu + H2O
Cu + Cl2→ CuCl2
CuCl2 + 2NaOH → Cu(OH)2 +2 NaCl
Cu(OH)2 \(\underrightarrow{t^°}\) CuO + H2O
CuO +H2SO4 →CuSO4 +H2O
CuSO4 +BaCl2 → BaSO4 + CuCl2
\(a,2Al_2O_3\rightarrow\left(đpnc,criolit\right)4Al+3O_2\\ 2Al+6HCl\rightarrow2AlCl_3+3H_2\\ AlCl_3+3NaOH\rightarrow Al\left(OH\right)_3+3NaCl\\ 2Al\left(OH\right)_3\rightarrow\left(t^o\right)Al_2O_3+3H_2O\\ Al_2O_3+3H_2SO_4\rightarrow Al_2\left(SO_4\right)_3+3H_2O\)
\(b,2Cu+O_2\rightarrow\left(t^o\right)2CuO\\ CuO+2HCl\rightarrow CuCl_2+H_2O\\ CuCl_2+2KOH\rightarrow Cu\left(OH\right)_2+2KCl\\ Cu\left(OH\right)_2\rightarrow\left(t^o\right)CuO+H_2O\)
\(\text{CuO+2HCl(dung dịch pha loãng)=CuCl2+H2O}\)
\(\text{Ca(OH)2+CuCl2→Cu(OH)2↓+CaCl2}\)
\(\text{Cu(OH)2 → CuO + H2O}\)
\(\text{CuO + H2SO4 → H2O + CuSO4}\)
\(\text{CuSO4(dung dịch pha loãng)+H2=Cu↓+H2SO4}\)
PT cuối sai
\(CuO+2HCl->CuCl_2+H_2O\)
\(CuCl_2+2NaOH->Cu\left(OH\right)_2+2NaCl\)
\(Cu\left(OH\right)_2->CuO+H_2O\) (Nhiệt độ nữa nha bạn)
\(CuO+H_2SO_4->CuSO_4+H_2O\)
\(CuSO_4\:+Fe->FeSO_4+Cu\)
\(Cu+2AgNO_3->Cu\left(NO_3\right)_2+2Ag\)
\((1)Cu+2H_2SO_{4(\text{đ})}\xrightarrow{t^o} CuSO_4+2H_2O+SO_2\uparrow\\ (2)CuSO_4+BaCl_2\to CuCl_2+BaSO_4\downarrow\\ (3)CuCl_2+2NaOH\to Cu(OH)_2\downarrow +2NaCl\\ (4)Cu(OH)_2\xrightarrow{t^o}CuO+H_2O\\ (5)CuO+H_2\xrightarrow{t^o}Cu+H_2O\)
c) 4FeS2+ 11O2--->8SO2 +2Fe2O3
Fe2O3+3H2--->2Fe+3H2O
2Fe +6HCl--->2FeCl3 +3H2
FeCl3+3NaOH--->Fe(OH)3+ 3NaCl
2Fe(OH)3 +3H2SO4---->Fe2(SO4)3 +3H2O
d)2 Fe +6HCl-->2FeCl3+3H2
FeCl3 + 3NaOH--->Fe(OH)3 +3NaCl
2Fe(OH)3 --->Fe2O3 +3H2O
e) Fe +2HCl---.FeCl2 +H2
FeCl2+2NaOH---->Fe(OH)2 +2NaCl
Fe(OH)2 +2AgNO3---> Fe(NO3)2 +2AgOH
Chúc bạn học tốt
Nhớ tích cho mình nhé
a) 4K+ O2--->2K2O
K2O+H2O-------->.2KOH
KOH+ NaCO3--->K2CO3+NaOH
K2CO3+2HCl---->2KCl+H20+CO2
B) 2Cu+O2---->2CuO
CuO+H2SO4---->CuSO4+ H2O
CuSO4+ 2NaOH--->Cu(OH)2 +Na2SO4
Cu(OH)2----->CuO+H2O
2CuO--->2Cu+O2
Chúc bn học tốt
\(Cu+2H_2SO_{4\left(đ\right)}\underrightarrow{t^o}CuSO_4+SO_2+2H_2O\)
Bạn xem lại đoạn CuSO4 → CuO nhé.
\(CuO+H_2\underrightarrow{t^o}Cu+H_2O\)