Различие между металлической и ковалентной связи
1) KOH + HNO3 = КNO3 + H2O
2) 2KOH + NiCl2 = 2KCl + Ni(OH)2
3) 2Bi(OH)3 + 3H2SO4 = 6H2O + <span>Bi2(SO4)3
4) 2KOH + H2SiO3 = </span><span>K2SiO3 + 2H2O
5) 2NaOH + MgSO4 = Na2SO4 + Mg(OH)2</span>
Zn + S = ZnS
Zn(0) -2e = Zn(+2) 1 в-ль, ок-ие
S(0)+2e=S(-2) 1 ок-ль, в-ие
Zn(0)+S(0) = Zn(+2) + S(-2)
1) S+ O2 -> SO2
2) SO2+H2O-> H2SO3
3) Zn(OH)2 + H2SO3 = ZnSO3
C + O₂(избыток) = CO₂
C + 4HNO₃ = <span>CO</span>₂<span>↑ + 4NO</span>₂<span>↑ + 2H</span>₂<span>O
C + HCl </span>≠
<span>C + CO</span>₂ = 2CO
<span>C + Na</span>₂SiO₃ ≠
<span>3C + 4Al = Al</span>₄C₃
<span>C + 2H</span>₂SO₄ = CO₂ + 2SO₂ + H₂O<span>
C + 2Cl</span>₂ = CCl₄