Pb(NO3)2 + Na2SO4 = PbSO4 + 2NaNO3
Pb(2+) + 2NO3(-) + 2Na(+) + SO4(2-) = PbSO4 + 2Na(+) + 2NO3(-)
Pb(2+) + SO4(2-) = PbSO4
1)MgOHCl
2)NaHCO3
3)<span>Ca3(PO4)2
</span>4)AgCl
Вот, но то, что в Fe2(SO4)3 степень окисления S=+5,я сомневаюсь
N(HBr) = V(HBr)/Vm = 33,6/22,4 = 1,5 мольm(HBr) = n(HBr)*M(HBr) = 1,5*81 = 121,5 гm(p-paHBr) = m(H2O) + m(HBr) = 200 + 121,5 =321,5 г<span>W(HBr) = m(HBr)/m(p-paHBr) = 121,5/321,5 = 0,38 или 38\%</span>
Al4C3 - CH4 - CH3Cl - CH3OH - CH3Br
Al4C3 + 12 H2O = 4 Al(OH)3 + 3 CH4 ↑
CH4 + Cl2 = CH3Cl + HCl
CH3Cl + NaOH = CH3OH + NaCl
CH3OH + HBr = CH3Br + H2O
C2H4 - C2H5OH - C2H5Br - HBr - MnBr2
C2H4 + Н2О = С2Н5ОН
С2Н5ОН + НВr = C2H5Вr + H2O
C2H5Br + H2 t° = C2H6 ↑ + HBr ↑
Mn(OH)2 + 2 HBr = MnBr2 + 2 H2O