1) 2Al + 3Cl2 = 2AlCl3
2) AlCl3 + 3NaOH = Al(OH)3 (в осадок) + 3NaCl
3) 2Al(OH)3 + 3H2SO4 = Al2(SO4)3 + 6H2O
#1
В)H2SO4
<span>Г)H2S
</span><span>Ж)Na2SO4
</span>#2
<span>2)Ba(OH)2,NaOH,LiOH</span>
Ag2O + HNO3 --> AgNO3 +H2O
AgNO3 + H2S --> Ag2S + AgNO3
Ag2S + O2 --> Ag2O + SO2
1 спосіб:
D(alk)(29) = 3.93 ==> M(alk) = 3.93 * 29 = 114 г/моль
CnH2n+2 = 114
14n = 112
n = 112/14 = 8.
C8H18 — октан
2 спосіб:
D(alk)(29) = 3.93 ==> M(alk) = 3.93 * 29 = 114 г/моль
n(C) = (84.21*114)/1200 = 8
n(H) = (15.79*114)/100 = 18
C8H18 — октан.