2 задача. Химия 11 класс
S+ H2= H2S 2 H2S + SO2= S + 2 H2O 3 S +2 Al= Al2S3 Al2S3 + 6HCl= 2 AlCl3 + 3 H2S 2 H2S + 3 O2= SO2 + 2 H2O SO2 + CaO= CaSO3 +H2O S + 2 Cl2 =SCl4 SCl4 + 6 NaOH= Na2SO3 +4 NaCl + 3 H2O Na2SO3 + SO2 + H2O= 2 NaHSO3 NaHSO3 + 2 NaOH = Na2SO3 + H2O
1)S+=S 2S+S=3S+2O 3S+2Al= +6O=2Al+3S S+=S+O S+Ca=Ca+O 2)S+2=S S+6NaOH=4NaCI++3 ++S=NaH NaH+NaOH=+