Как-то так))))))))))))))))))))))))))))
N(HBr) = V(HBr) /Vm = 33,6/22,4 = 1,5 моль
<span>m(HBr) = n(HBr)*M(HBr) = 1,5*81 = 121,5 г
</span><span>m(p-pa HBr) = m(H2O) + m(HBr) = 200 + 121,5
=321,5 г</span>
<span>W(HBr) = m(HBr)/m(p-pa HBr) = 121,5/321,5 = 0,38 или<span> 38\%</span></span>
1) 2CuS + 3O2 = 2CuO + 2SO2↑
CuO + H2SO4 = CuSO4 + H2O
CuSO4 + 4CO = CuS + 4CO2↑
CuS + H2SO4 = CuSO4 + H2S↑
2H2S + 3O2 = 2H2O + 2SO2↑
SO2 + Na2O = Na2SO3
Na2SO3 + H2SO4 = Na2SO4 + H2O + SO2↑
2) 2Fe + 6H2SO4(конц.) = Fe2(SO4)3 + 3SO2↑ + 6H2O
Fe2(SO4)3 + 6NaOH = 3Na2SO4 + 2Fe(OH)3↓
2Fe(OH)3 = Fe2O3 + 3H2O
Fe2O3 + 3CO = 2Fe + 3CO2↑
Fe + S = FeS
FeS + H2SO4 = FeSO4 + H2S↑
2H2S + 3O2 = 2H2O + 2SO2↑
2SO2 + O2 = 2SO3
H2O + SO3 = H2SO4
H2SO4 + 2NaOH = Na2SO4 + 2H2O
Na2SO4 + Ba(OH)2 = BaSO4↓ + 2NaOH
10% от 120 грамм = 12 грамм
CH3COOH + NaHCO3 = CH3COONa + H2O + CO2
12/60 = x/22.4
x = 4.48 л