S--> SO 2--> SO 3 --> H 2 SO 4 -->Na SO 2 . Miu cần gấp giúp Miu vs ạ
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FeS + 2HCl => FeCl2 + H2S
H2S + 1/2 O2 thiếu => S + H2O
S + O2 => SO2
SO2 + NaOH => NaHSO3
2NaHSO3 => Na2SO3 + SO2 + H2O
Na2SO3 + SO2 + H2O => 2NaHSO3
NaHSO3 + HCl => NaCl + SO2 + H2O
SO2 + 2NaOH => Na2SO3 + H2O
Na2SO3 + H2SO4 => Na2SO4 + SO2 + H2O
Na2SO4 + BaCl2 => BaSO4 + 2NaCl
NaCl + AgNO3 => AgCl + NaNO3
a, (1) S + O2 \(\underrightarrow{t^o}\) SO2
(2) SO2 + \(\dfrac{1}{2}\)O2 \(\underrightarrow{V_2O_5}\) SO3
(3) SO3 + H2O -> H2SO4
(4) H2SO4 + 2Na -> Na2SO4 + H2
(5) Na2SO4 + BaCl2 -> BaSO4 + 2NaCl
b, (1) không tìm được chất phù hợp
(2) không tìm được chất phù hợp
(3) SO2 + \(\dfrac{1}{2}\)O2 \(\underrightarrow{V_2O_5}\) SO3
(4) SO3 + H2O -> H2SO4
(5) H2SO4 + BaCl2 -> BaSO4 + 2HCl
a/ (1) FeS + 2HCl => FeCl2 + H2S
(2) H2S + 2NaOH => Na2S + 2H2O
(3) Na2S + FeCl2 => 2NaCl + FeS
(4) 2FeS + 8H2SO4 đ,n => Fe2(SO4)3 + 7SO2 + 8H2O
(5) Fe2(SO4)3 + 3BaCl2 => 3BaSO4 + 2FeCl3
(6) FeCl3 + 3NaOH => Fe(OH)3 + 3NaCl
b/ FeS2 + O2 => Fe2O3 + SO2
SO2 + H2S => S + H2O
S + H2 => H2S
H2S + O2 => SO2 + H2O
SO2 + O2 => (to,V2O5) SO3
SO3 + H2O => H2SO4
2H2SO4 đ,n + Cu => CuSO4 + SO2 + 2H2O
SO2 + NaOH => NaHSO3
P/s: Bạn tự cân bằng nhaa
https://hoc24.vn/hoi-dap/question/518243.html
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a)
\(PTHH:\left(1\right)2Ca+O_2\rightarrow2CaO\\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \left(2\right)CaO+2HCl\rightarrow CaCl_2+H_2O\\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \left(3\right)CaCl_2+2HNO_3\rightarrow2HCl+Ca\left(NO_3\right)_2\\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \left(4\right)Ca\left(NO_3\right)_2\rightarrow Ca\left(NO_2\right)_2+O_2\)
b)
\(PTHH:\left(1\right)S+O_2\rightarrow SO_2\\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \left(2\right)2SO_2+O_2\rightarrow2SO_3\\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \left(3\right)SO_3+H_2O\rightarrow H_2SO_4\\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \left(4\right)H_2SO_4+2NaCl\rightarrow2HCl+Na_2SO_4\\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \left(5\right)Na_2SO_4+BaCl_2\rightarrow BaSO_4+2NaCl\)
a. S---> SO 2 ---> KHSO 3 ---> SO 2
S+O2-to->SO2
SO2dư+KOh->KHSO3
KHSO3+HCl->KCl+H2O+SO2
b. FeS2--> SO2---> SO3---> H 2 SO4--->K 2 SO 4-->KCl ---> KNO 3
2FeS2+11\2O2-to->Fe2O3+4SO2
2SO2+O2-to->2SO3
SO3+H2O->H2SO4
H2SO4+2KOH->K2SO4+2H2O
K2SO4+BaCl2->2KCl+BaSO4
KCl+AgNO3->AgCl+KNO3
c. H 2 S ---> SO 2 ---> H 2 SO 4---> SO 2--->S
2H2S+3O2-to->2H2O+SO2
SO2+Br2+H2O->H2SO4+2HBr
H2SO4+Na2SO3->Na2SO4+H2O+SO2
SO2+2H2S->2H2O+3S
1/ 4Al+3O2->2Al2O3
2/ 4K+O2->2K2O
3/ 2Al(OH)3-->Al2O3+3H2O
4/ Al2O3+6HCl->2AlCl3+3H2O
5/ 2Al+6HCl->2AlCl3+3H2
6/ FeO+2HCl->FeCl2+H2O
7/ Fe2O3+3H2SO4->Fe2(SO4)3+3H2O
8/ 2NaOH+H2SO4->Na2SO+2H2O
9/ 3Ca(OH)2+2FeCl3->3CaCl2+2Fe(OH)3
10/ BaCl2+H2SO4->BaSO4+2HCl
------------------------------<3-----------------------------------
1, 2Mg + O2 => 2MgO
2, Cu + Cl2=> CuCl2
3, 2Al + 3O2=> 2Al2O3
4, 4Na + O2=> 2Na2O
5, 2SO2+ O2 => 2SO3
6, 3KOH +FeCl3 => Fe(OH)3 +3KCl
7, Na2O + 2HCl => 2NaCl + H2O
8, 2Al + 3H2SO4 => Al2 (SO4)3 + 3H2
1, 2Mg + O2 → 2MgO
2, Cu + Cl2 → CuCl2
3, 4Al + 3O2 → 2Al2O3
4, 4Na + O2 → 2Na2O
5, 2SO2 + O2 → 2SO3
6, 3KOH + FeCl3 → 3KCl + Fe(OH)3
7, Na2O + 2HCl → 2NaCl + H2O
8, 2Al + 3H2SO4 → Al2(SO4)3 + 3H2
S+O2---->SO2
2SO2+O2--->2SO3
SO3+H2O--->H2SO4
H2SO4+2NaOH--->Na2SO4+H2O
S+O2--->SO2
2SO2+O2--->2SO3
SO3+H2O---->H2SO4
H2SO4+NaOH--->Na2SO4+H2O