A)2Ca+O2=2CaO
CaO+H2O=Ca(OH)2
Ca(OH)2+Na2CO3=2NaOH+CaCO3
CaCO3+2HCl=CaCl2+CO2+H2O
CaCl2+H2SO4=CaSO4+2HCl
b)2Mg+O2=2MgO
MgO+H2O=Mg(OH)2
Mg(OH)2+Na2SO4=2NaOH+MgSO4
c)SiO2+2NaOH=Na2SiO3+H2O
Na2SiO3+CO2+H2O=Na2CO3+H2SiO3
d)4P+5O2=2P2O5
P2O5+3H2O=2H3PO4
3Ca+2H3PO4=Ca3(PO4)2+3H2
Ca3(PO4)2+3CO2+3H2O=3CaCO3+2H3PO4
H3PO4(изб.)+Ca(OH)2=Ca(H2PO4)2+2H2O
e)(C+O2=CO2
CO2+2NaOH=Na2CO3+H2O)
Na2CO3+2HCl=2NaCl+H2O+CO2
CO2+Ca(OH)2=CaCO3+H2O
CaCO3=(t=900)=CaO+CO2
А) 2CH4 = HC≡CH+3H2
2HC≡CH = HC≡C-CH=CH2
HC≡C-CH=CH2+HCl = CH2=C(Cl)-CH=CH2
<span>nCH2=C(Cl)-CH=CH2 = (-CH2-C(Cl)=CH-CH2-)n
</span>б) 2C+H2 = <span>HC≡CH
</span><span>HC≡CH+H2 = CH2=CH2
</span><span>3CH2=CH2+2KMnO4+4H2O = 3HO-CH2-CH2-OH+2KOH+2MnO2
5HO-CH2-CH2-OH+8KMnO4+12H2SO4 = 5HOOC-COOH+8MnSO4+4K2SO4+22H2O
в) CaCO3=CaO+CO2
CaO+3C=CaC2+CO
CaC2+2H2O = </span><span>HC≡CH+Ca(OH)2
</span><span>HC≡CH+H2O = CH3COH
</span>CH3COH+2Cu(OH)2 = CH3COOH+Cu2O+2H2O
CH3COOH+Cl2 = Cl-CH2-COOH+HCl
Cl-CH2-COOH+2NH3 = NH2-CH2-COOH+NH4Cl
г) <span>CaCO3=CaO+CO2
CaO+3C=CaC2+CO
CaC2+2H2O = </span><span>HC≡CH+Ca(OH)2
</span><span>2HC≡CH+5O2=4CO2+2H2O
</span>CO2+NH3 = NH2-C(O)-NH2
<span>3HC≡CH = C6H6
</span>C6H6+Cl2 = C6H5Cl+HCl
C6H5Cl+2NH3 = C6H5NH2+NH4Cl
д) 2C+O2=2CO
CO+2H2 = CH3OH
CH3OH+CuO = HCOH+Cu+H2O
2nHCOH+nC6H5OH = (-CH2-C6H3OH-CH2-)n +nH2O
2CO+2H2 = CH3COOH
CH3COOH+CH3OH = CH3COOCH3+H2O
Дано m(СₓН₂ₓО₂)=102 г/моль
V(H2)=11.2 дм³
формула-?
Общая формула кислоты СхН₂хО₂
2СхН₂хО₂+Mg=(CₓH₂x-₁O₂)₂Mg+ H₂
2 моль 1 моль
n(H₂)=11.2/22.4=0.5 моль, n (СхН₂хО₂)=0.5*2=1моль
Молярная масса M(СхН2хО2)=m/N=102/1=102 г/моль
СхН2хО2=102
12x+2x+32=102
14x=70
x=5 C5H10O2( C4H9COOH)
3Cu+8HNO3(Разб.)=3Cu(NO3)2+2NO(газ)+4H2O/
3+8+3+2+4=20. Ответ:20.