0,672!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Fe + 2HCl = FeCl2 + H2
Fe 0 -2e == Fe2+
2H +1 +2e == H2
FeCl2 + 2NaOH = Fe(OH)2 + 2NaCl
Fe(OH)2 =t=FeO + H2O
FeO + H2SO4 = FeSO4 + H2O
FeO + 2H+ +SO4(2-) == Fe (2+) + SO4(2-) + H2O
FeO + 2H+ == Fe (2+) + H2O
А) С + 2H2 =(400C p) Ch4 или
3С + 4Al =(1400С) Al4C3
al4c3 + 12h2o = 3ch4 + 4al(oh)3.
СH4 + Cl2 = (hn) Ch3Cl + HCl
C2H5MgCl +CH3Cl=C3H8 +MgCl2
C3H8 + Br2 = (t hn) c3h7br + hbr
c3h7br + Koh(водн) = c3h7oh + kbr
c3h7oh + CuO = C2h5CoH + Cu + h2o
б)С + 2H2 =(400C p) Ch4
2СH4 = (1500C) C2h2 + 3H2
3C2h2 = (Cакт 500С) c6h6
С6H6 + Cl2 =(AlCl3) с6h5Cl + HCl
c6h5cl + KOH = c6h5oh + kcl
c6h5oh + naoh = c6h5ona + h2o
в) СaC2 + 2H2O = Ca(OH)2 + C2H2
C2H2 + H2O = (HgSO4) Ch3cOh
C2h2 + H2 =(Pt ) C2h4
c2h4 + PdCl2 + h2o =(110-130C p=0.3 мпа) ch3coh + pd + 2HCl
с2h4 + h2o =(H+) c2h5oh
2KMnO4 + 3H2SO4 + 5C2H5OH = (t)K2SO4 + 2MnSO4 + 8H2O + 5CH3COH
5CH3CHO + 2KMnO4 + 3H2SO4 = (t)5CH3COOH + K2SO4 + 2MnSO4 + 3H2O
г)c2h4 + PdCl2 + h2o =(110-130C p=0.3 мпа) ch3coh + pd + 2HCl
ch3coh + LiAlH4 + 4h2o = C2h5oh + LiOH + Al(OH)3 + 2H2
5C2H5OH + 4KMnO4 + 6H2SO4 =(t) 5CH3COOH + 2K2SO4 + 4MnSO4 + 11H2O
c2h5oh + c3h7oh = (h2so4) c2h5oc3h7 + h2o
д)СH4 + Cl2 = (hn) Ch3Cl + HCl
сh3cl + ch3mgcl = c2h6 + mgcl2
c2h6 =(Pt t) c2h4 + h2
c2h4 + pdcl2 + h2o = ch3cho + pd + 2HCl
5CH3CHO + 2KMnO4 + 3H2SO4 = (t)5CH3COOH + K2SO4 + 2MnSO4 + 3H2O
ch3cooh + cl2 = (hn) = ch2clcooh + hcl
ch2clcooh + 2nh3 = ch2(nh2)cooh + nh4cl
w=mр-в/mр-ра
mр-в=0,074*100=7,4г
1/1
n(Ca(OH)2)=7.4/74=0.1 моль
n(H2SO4)=0.1 моль
m(H2SO4)=0.1 моль*98 г/моль=9,8г
Ответ: m(H2SO4)=9.8г