<span> O</span><span>
//
</span><span>H
- O - N</span><span>
\\</span><span>
O</span>
1)n=m/M.M
O2=n=100/32=3.125
O3=n=100/48=2.08
2)n=N/NA
N=n*NA
O2=3.125*6.02*10^23=18.8 атомов
О3=2.08*6.02*10^23=12.5 атомов
О2>О3
H₂⇒HCI⇒ FeCI₂⇒Fe(OH)₂⇒FeSO₄⇒FeCI₂ ⇒Fe
H₂+CI₂=2HCI
2HCI + Fe(OH)₂= FeCI₂ + 2H₂O
FeCI₂ + 2NaOH = Fe(OH)₂↓+2 NaCI
Fe(OH)₂ + H₂SO₄=FeSO₄+2H₂O
FeSO₄ + BaCI₂= FeCI₂ + BaSO₄↓
2FeCI₂ +2AI =2Fe + 2AICI₃