C2H6 + Br2 = C2H5Br + HBr (над = hv )
C2H5Br + KOH (водн) = C2H5OH + KBr
C2H5OH + CuO = CH3-CHO + Cu + H2O
CH3-CHO + 2Cu(OH)2 = CH3-COOH + Cu2O + 2H2O
CH3-COOH + NaOH = CH3COONa + H2O
CH3-COONa + NaOH = CH4 + Na2CO3
<span>BaO + H</span>₂<span>O
= Ba(OH)</span>₂
<span>Ba(OH)</span>₂<span> + K</span>₂<span>S = BaS</span>↓ + 2KOH
<span>BaS + 2HNO</span>₃<span>= Ba(NO</span>₃<span>)</span>₂<span> + H</span>₂<span>S</span>↑
0,5
моль х г
BaO -------> <span>Ba(NO</span>₃<span>)</span>₂
1 моль 261
г
х = 0,5 моль ·
261 г = 130,5 г
Объяснение:
1) 2) 3) 4)
C2H6 -> C2H5Cl -> C2H5OH -> CO2 ->
5)
C6H12O6 -> C2H5OH
1) C2H6 + Cl2 -> C2H5Cl + HCl
2) C2H5Cl + KOH -> C2H5OH + KCl
3) C2H5OH + 3O2 -> 2CO2 + 3H2O
4) 6CO2 + 6H2O -> C6H12O6 + 6O2 - (фотосинтез)
5) C6H12O6 -> 2C2H5OH + 2CO2
4Zn + 10HNO3 = NH4NO3 + 4Zn(NO3)2 + 3H2O
Zn(0) - 2e --> Zn(2+) 4
N(5+) + 8e --> N(3-) 1