15,
00m)
conyac % P/v de EtOH en la mostra ?
↓
500m) -- 10mL destila > EtOH + 50m) CrOf2- (Ht)
1 , 67 .
102M
/
CHzC581 + exces Cr202-
↓
16 , 24 m( 0, 1006 M Fe+
3 (CHgCH20H + H20 - CUyCOOH + 4Ht + Ye-
2 (CreOf2- + 14H+ + 6e - = 2 (r 3 + + 7H20)
3 CUz(nzon + 2(reOy" + 16Ht = 3Ch3(80H + 4(r3+ + 11H20
6fez+ + (r 2012 + 144+ -
> 6fe3t + 2(r3+ + 7H20
mols Cr20" totals - 50m2 x 8.35 .
10"mos Crettes
mols Cr20p2exies -
> 16, 24 m) , 2006 masfelt mol 2, 723 Tsi
1008m)
CrzOexces
mols (r20+2-(EtOU)= 8 , 35 .
157 2, 723 . 15" = 5 , 627 ·
10"moes Cr20p-
500mL5 , 627 .
15"mots Cr20",
3 mals ChaCHON x6gCH3CHO -
X X
2 mols Cr282-1moe CHzCHzON 18mL
1
Filsonal 100 = 38 , 8 %
Vista previa
del documento.
Mostrando 1 páginas de 2