5 не знаю....................
Zn + Cl2 = ZnCl2
ZnCl2 +2 NaOH = Zn(OH)2 + 2NaCl
Zn(OH)2 = ZnO + H2O
ZnO + 2HNO3 = Zn(NO3)2
Zn(OH)2 + 2NaOH(избыток) = Na2[Zn(OH)4]
Na2[Zn(OH)4] +H2SO4=ZnSO4+2NaOH+H2O
ZnSo4 (t) = ZnO+ SO3
N₂°+3H₂°=2N⁻³H₃⁺
N₂° +6e=2N⁻³ 1ок-ль в-ние
H₂°-2e=2H⁺ 3в-ль ок-ние
Al4C3->CH4->CH3Br->C2H6->CO2
1)Al4C3+12H2O=4Al(OH)3+3CH4
2)CH4+Br2=CH3Br+HBr
3)2CH3Br+2Na=2NaBr+C2H6
4)2C2H6+7O2=4CO2+6H2O