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1, 4Mg + 10HNO3 loãng------> 4Mg(NO3)2 + N2O + 5H2O
2, 10Al + 36HNO3 loãng------> 10Al(NO3)3 + 3N2 + 18H2O
3, 4Mg+ 10HNO3 loãng--------> 4Mg(NO3)2+ NH4NO3 + 3H2O
4, 3Fe3O4+ 28HNO3 loãng--------> .9Fe(NO3)3 +NO + 14H2O
5, 8FeS + 8 H2SO4 đặc------> 3Fe2(S04)3 + SO2+8H2
6, FeS2 + 18HNO3 đặc -------> Fe(NO3)3+ 15NO2 + 2H2SO4 + 7H2O
1, 4Mg+10HNO3 ----->4Mg(NO3)2+N2O+5H20
Quá trình khử: 2NO3− + 10H+ + 8e− = N2O + 5H
Quá trình oxy hoá Mg − 2e− = Mg2+
1.Al\(\rightarrow\)Al+3 +3e_______________.(5x-2y)
xN+5 +(5x-2y)e\(\rightarrow\)xN+\(\frac{2y}{x}\)______.3
\(\rightarrow\)(5x-2y)Al+(18x-6y)HNO3\(\rightarrow\)(5x-2y)Al(NO3)3+3NxOy+(9x-3y)H2O
2.M\(\rightarrow\)M+n +ne____.2
S+6 +2e\(\rightarrow\)S+4_____.n
\(\rightarrow\)2M+3nH2SO4\(\rightarrow\)2M(SO4)n+nSO2+3nH2O
3.M\(\rightarrow\)M+n +ne__________.(5x-2y)
xN+5 +(5x-2y)e\(\rightarrow\)xN+\(\frac{2y}{x}\) ____.n
\(\rightarrow\)(5x-2y)M+(6nx-2ny)HNO3\(\rightarrow\)(5x-2y)M(NO3)n+nNxOy+(3nx-ny)H2O
N+5 +3e\(\rightarrow\)N+2 __________.1
2N+5 +8e\(\rightarrow\)2N+1_________ .2
\(\rightarrow\)5N+5 +19e\(\rightarrow\)N+2 +4N+1______ .2
Zn\(\rightarrow\)Zn+2 +2e ____________ .19
\(\rightarrow\)19Zn+48HNO3\(\rightarrow\)19Zn(NO3)2+2NO+4N2O+24H2O
2N+5 +10e\(\rightarrow\)2N0 .2
2N+5+ 8e\(\rightarrow\)2N+1 .1
\(\rightarrow\)6N+5 +28e\(\rightarrow\)4N0 +2N+1 .3
Al\(\rightarrow\)Al+3 +3e _________.28
\(\rightarrow\)28Al+102HNO3\(\rightarrow\)28Al(NO3)3+6N2+3N2O+51H2O
2Fe+2 \(\rightarrow\)2Fe+3 +2e .5
Mn+7 +5e\(\rightarrow\)Mn+2 .2
\(\rightarrow\)10FeSO4+2KMnO4+2KHSO4\(\rightarrow\)5Fe2(SO4)3+2MnSO4+2K2SO4+H2O
4. (5x-2y)AL + (18x-6y)HNO3 -------> (5x-2y)AL(NO3)3 + 3NxOy +(9x-3y)H2O
5. 2M + 2nH2SO4--------> M2(SO4)n + nSO2 + 2nH2O
6. (5x-2y)M + (6nx-2ny)HNO3 -------->(5x-2y) M(NO3)n +n NxOy + (3nx-ny)H2O
7. 11Zn + 28HNO3 -------> 11Zn( NO3)2 + 2NO + 2N2O + 14H2O
8. 46AL + 168HNO3 -------;> 46AL( NO3)3 + 9N2 + 6N2O + 84H2O
9. 10FeSO4 + 2KMnO4 + 16KHSO4 ---> 5Fe2(SO4)3 +9 K2SO4 + 2MnSO4 + 8H2O.
pứ : (1) 3 - 8 - 3 - 2 - 4
(2) 2 - 4 - 1 - 1 -4
(3) 2 - 10 - 3 - 1 - 10
(4) 2 - 10 - 8 - 5 - 1- 2 -8
(6) 10 - 36 - 10 - 3 - 18
phản ứng 5 sai bạn ơi
Mk làm ví dụ 3 ý đầu nhé mấy ý sau tương tự
MnO2+HCl\(\rightarrow\)MnCl2+Cl2+H2O
Mn+4 +2e\(\rightarrow\)Mn+2_____.1
2Cl- \(\rightarrow\)Cl2+2e________.1
\(\rightarrow\)MnO2+4HCl\(\rightarrow\)MnCl2+Cl2+2H2O
Al\(\rightarrow\)Al+3 +3e ______.8
N+5 +8e\(\rightarrow\)N-3______.3
\(\rightarrow\)8Al+30HNO3\(\rightarrow\)8Al(NO3)3+3NH4NO3+15H2O
6Fe+\(\frac{8}{3}\rightarrow\)6Fe+3 +2e ___________.3
S+6 +6e\(\rightarrow\)S0 ________________ .1
\(\rightarrow\)6Fe3O4+28H2SO4\(\rightarrow\)9Fe2(SO4)3+S+28H2O
a, 10FeCl2+6KMnO4+24H2SO4→5Fe2(SO4)3+10Cl2+3K2SO4+6MnSO4+ 24H2O
b, 13Mg+32HNO3→13Mg(NO3)2+1N2+1N2O+1NH4NO3+14H2O
x 13 Mg0 → Mg+2 + 2e-
x 1 5N+5 + 26e-→ N20 + N2+1 + N-3
c, (5x-2y)Fe3O4+(46x-18y)HNO3→(15x-6y)Fe(NO3)3+1NxOy+(23x-9y)H2O
x (5x-2y) 3Fe+8/3 → 3Fe+3 + 1e-
x 1 xN+5 + (5x-2y)e- → xN+2y/x