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PTK: + H3PO4 = 191 đvC
+ Na2CO3 = 106 đvC
+ SO3 = 80 đvC
+ NaOH = 49 đvC
+ Al2(SO4)3 = 342 đvC
PTK: + H3PO4 = 191 đvC
+ Na2CO3 = 106 đvC
+ SO3 = 80 đvC
+ NaOH = 49 đvC
+ Al2(SO4)3 = 342 đvC
Ba zơ:
NaOH : natri hyđroxit
Muối sunfat:
FeSO4 : Sắt II sunfat
Al2(SO4)3 : Nhôm sunfat
Muối clorua :
KCl : kali clorua
oxit bazơ:
FeO : Sắt II oxit
MgO : magie oxit
oxit axit:
SO3 : lưu huỳnh trioxit
P2O5 : điphotpho pentaoxit
axit : HNO3 : axit nitric
a) \(M_{SO_3}=32+48=80\left(DvC\right)\\ \%S=\dfrac{32}{80}.100\%=40\%\\ \%O=100\%-40\%=60\%\)
b)\(M_{CuSO_4}=64+32+16.4=160\left(DvC\right)\\ \%Cu=\dfrac{64}{160}.100\%=40\%\\ \%S=\dfrac{32}{160}.100\%=20\%\\ \%O=100\%-40\%-20\%=40\%\)
c) \(M_{H_3PO_4}=1.3+31+16.4=98\left(DvC\right)\\ \%H=\dfrac{1.3}{98}.100\%=3\%\\ \%P=\dfrac{31}{98}.100\%=31\%\\ \%O=100\%-3\%-31\%=66\%\)
d) \(M_{Al_2\left(SO_4\right)_3}=27.2+\left(32+64\right).3=342\left(DvC\right)\\ \%Al=\dfrac{27.2}{342}.100\%=15\%\\ \%S=\dfrac{32.3}{342}.100\%=28\%\\ \%O=100\%-15\%-28\%=57\%\)
a.\(\%S=\dfrac{32\times100}{32+16\times3}=40\%\)
%O = 100 - 40 = 60%
b.\(\%Cu=\dfrac{64\times100}{64+32+16\times4}=40\%\)
\(\%S=\dfrac{32\times100}{64+32+16\times4}=20\%\)
%O = 100 - 40 - 20 = 40%
c.\(\%H=\dfrac{3\times100}{3+31+64}=3.1\%\)
\(\%P=\dfrac{31\times100}{3+31+64}=31.6\%\)
%O = 100 - 3.1 - 31.6 = 65.3%
d.\(\%Al=\dfrac{54\times100}{54+96+192}=15.8\%\)
\(\%S=\dfrac{96\times100}{54+96+192}=28.1\%\)
%O = 100 - 15.8 - 28.1 = 56.1%
a)
$2KClO_3 \xrightarrow{t^o} 2KCl + 3O_2$
$O_2 + 2Cu \xrightarrow{t^o} 2CuO$
$CuO + H_2 \xrightarrow{t^o}Cu + H_2O$
b)
$S + O_2 \xrightarrow{t^o} SO_2$
$2SO_2 + O_2 \xrightarrow{t^o,V_2O_5} 2SO_3$
$SO_3 + H_2O \to H_2SO_4$
$2Al + 3H_2SO_4 \to Al_2(SO_4)_3 + 3H_2$
a. (1) 2KClO3 ---to---> 2KCl + 3O2.
(2) O2 + 2Cu ---to---> 2CuO.
(3) CuO + H2 ---to---> Cu + H2O.
b. (1) S + O2 ---to---> SO2.
(2) 2SO2 + O2 ---to---> 2SO3.
(3) SO3 + H2O ------> H2SO4.
(4) 3H2SO4 + 2Al ------> Al2(SO4)3 + 3H2.
1) 2SO2 + O2 → 2SO3
2) N2O5 + H2O → 2HNO3
3) Al2(SO4)3 + 6AgNO3 → 2Al(NO3)3 + 3Ag2SO4
4) Al2(SO4)3 + 6NaOH → 2Al(OH)3 + 3Na2SO4
5) CaO + CO2 → CaCO3
6) CaO + H2O → Ca(OH)2
7) CaCO3 + H2O + CO2 → Ca(HCO3)2
8) 4Na + 2H3PO4 → 2Na2HPO4 + H2
9) 6Na + 2H3PO4 → 2Na3PO4 + 3H2
10) 2Na + 2H3PO4 → 2NaH2PO4 + H2
a)
\(2KMnO_4\underrightarrow{t^o}K_2MnO_4+MnO_2+O_2\)
\(2Zn+O_2\underrightarrow{t^o}2ZnO\)
\(ZnO+H_2\underrightarrow{t^o}Zn+H_2O\)
b)
\(2H_2+O_2\underrightarrow{t^o}2H_2O\)
\(SO_3+H_2O\rightarrow H_2SO_4\)
\(Fe+H_2SO_4\rightarrow FeSO_4+H_2\)
\(CuO+H_2\underrightarrow{t^o}Cu+H_2O\)
\(2Cu+O_2\underrightarrow{t^o}2CuO\)
c)
\(S+O_2\underrightarrow{t^o}SO_2\)
\(2SO_2+O_2\underrightarrow{t^o,V_2O_5}2SO_3\)
\(SO_3+H_2O\rightarrow H_2SO_4\)
\(2Al+3H_2SO_4\rightarrow Al_2\left(SO_4\right)_3+3H_2\)
\(FeCl_3:Fe\left(III\right)\\ SO_3:S\left(VI\right)\\ Mg\left(OH\right)_2:Mg\left(II\right)\\ Al_2\left(SO_4\right)_3:Al\left(III\right)\)
Nhôm sunfit
Nhôm sulfat