Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
\(2C_xH_yO_z+\dfrac{4x+y-2z}{2}O_2\underrightarrow{t^o}2xCO_2+yH_2O\)
\(2C_xH_yO+\dfrac{4x+y-2}{2}O_2\underrightarrow{t^o}2xCO_2+yH_2O\)
\(6Fe_xO_y+\left(12x-2y\right)H_2SO_{4\left(đ\right)}\underrightarrow{t^o}3xFe_2\left(SO_4\right)_3+\left(3x-2y\right)S+\left(12x-2y\right)H_2O\)
\(8Fe_xO_y+\left(30x-4y\right)HNO_3\rightarrow8xFe\left(NO_3\right)_3+\left(3x-2y\right)N_2O+\left(15x-2y\right)H_2O\)
2 PTHH đầu mình cân bằng như bth, 2 PTHH cuối mình dùng phương pháp electron
1) 2CnH2n+3nO2→2nCO2+2nH2O
2) CnH2n + 2 + \(\dfrac{3n+1}{2}\) O2 -> nCO2 + (n+1)H2O.
3) CnH2n – 2 + \(\dfrac{3n-1}{2}\) O2 -> nCO2 +(n-1) H2O.
4) CnH2n-6 +\(\dfrac{3n-3}{2}\) O2 -> nCO2 + (n-3) H2O
5) CnH2n+2O+\(\dfrac{3n}{2}\)O2→nCO2+(n+1)H2O
6) 2CxHyOz + \(\dfrac{4x+y-2z}{2}\) O2 →2x CO2 + yH2O
7) CxHyOzNt + \(\left(x+\dfrac{y}{4}\right)-\dfrac{z}{2}\)O2→xCO2+\(\dfrac{y}{2}\)H2O + \(\dfrac{t}{2}\) N2
\(1.\text{2H2O + O2 + 4Fe(OH)2 → 4Fe(OH)3}\)
\(2.\text{4 FexOy + (3x- 2y) O2 ---> 2x Fe2O3}\)
\(3.\text{Fe2O3 + 3H2 → 2Fe + 3H2O}\)
\(4.\text{CO + CuO → Cu + CO2}\)
\(5.\text{4CO + Fe3O4 ⟶ 3Fe + 4CO2}\)
\(6.\text{yCO + FexOy → xFe + yCO2}\)
1) 4Fe(OH)2+O2+2H2O
2) FexOy+(3x-2y)O2--->2xFe2O3
3) 3H2+Fe2O3
4) CO + CuO
5) Fe3O4+ 4CO
6) FexOy + CO →Fe+CO2
1: 2KMnO4 + 16HCl -> 2KCl + 2MnCl2 + 5Cl2 + 8H2O
2: Fe3O4 + 8HCl --> FeCl2 + 2FeCl3 + 4H2O
3: 3FexOy + 2yAl --> 3xFe + yAl2O3
4: 2FexOy + (6x-2y)H2SO4 --> xFe2(SO4)3 + (3x-2y)SO2 + (6x-2y)H2O
5: FexOy + yH2 --> xFe + yH2O
a)
\(2KMnO_4 \xrightarrow{t^o} K_2MnO_4 + MnO_2 + O_2\)
(phản ứng phân hủy)
b)
\(3Fe + 2H_3PO_4 \to Fe_3(PO_4)_2 + 3H_2\)
(phản ứng thế)
c)
\(S + O_2 \xrightarrow{t^o} SO_2\)
(phản ứng hóa hợp)
d)
\(3Fe_2O_3 + CO \xrightarrow{t^o} 2Fe_3O_4 + CO_2\)
(phản ứng oxi hóa khử)
A: FeS2
B: SO2
C: SO3
D: H2SO4
E: CaSO3
F: Ca(HSO3)2
G: Br2
PTHH:
\(\left(1\right)4FeS_2+11O_2\xrightarrow[]{t^o}2Fe_2O_3+8SO_2\uparrow\\ \left(2\right)2SO_2+O_2\xrightarrow[V_2O_5]{t^o}2SO_3\uparrow\\ \left(3\right)SO_3+H_2O\rightarrow H_2SO_4\\ \left(4\right)2H_2SO_{4\left(đặc,nóng\right)}+Cu\rightarrow CuSO_4+SO_2\uparrow+2H_2O\\ \left(5\right)SO_2+Ca\left(OH\right)_2\rightarrow CaSO_3\downarrow+H_2O\\ \left(6\right)CaSO_3+SO_2+H_2O\rightarrow Ca\left(HSO_3\right)_2\)
\(\left(7\right)Ca\left(HSO_3\right)_2\xrightarrow[]{t^o}CaSO_3\downarrow+SO_2\uparrow+H_2O\\ \left(8\right)SO_2+Br_2+2H_2O\rightarrow H_2SO_4+2HBr\uparrow\)
1) 4Al+3O2->2Al2O3
2)2Zn+6H3PO4->2Zn2(PO4)3+9H2
3)
4)mk không nhìn đc
5)FexOy+yCO->xFe+yCO2
6)FexOy+2yxHCl->xFeCly+yH2O
7)2M+2nHCl->2MCln+nH2
8)4CxHy+(4x+y)O2->4xCO2+2yH2O
\(2KHCO_3+Ca\left(OH\right)_2\rightarrow K_2CO_2+CaCO_3+2H_2O\)
\(Al_2O_3+6KHSO_4\rightarrow Al_2\left(SO_4\right)_3+3K_2SO_4+3H_2O\)
\(nFe_2O_3+\left(3y-2x\right)H_2\rightarrow2Fe_xO_y+\left(3y-2x\right)H_2O\)
\(2NaHSO_4+BaCO_3\rightarrow Na_2SO_4+BaSO_4+CO_2+H_2O\)
\(6H_2SO_4+2Fe\rightarrow Fe_2\left(SO_4\right)_3+3SO_2+6H_2O\)
Tỉ lệ các phương trình : 1). 2:1:3 2). 1:y:x:y 3). Đang cân bằng 😅😅 4). (x+y/4 - z/2) : x : y/2
1) 2Fe(OH)3→Fe2O3+3H2O
2) FexOy+yCO→xFe+yCO2
3) FexOy+(x-y)CO→xFeO+(x-y)CO2
4) xCxHyOz+(4x+y-2z)/2O2→2xCO2+yH2O