CL KOH H SOCR X Y Z X2 2 4A.CRCL3 ,K2CRO4 ,K2CR2O...
Câu 9:
Cl
KOH
H SO
Cr
X
Y
Z X2
2
4
A.CrCl
3
,K
2
CrO
4
,K
2
Cr
2
O
7
.
Cr Cl CrCl
2
3
3
2
2Cr 3Cl 16OH 2CrO 6Br 8H O
2
4
2
2
2
2CrO 2H Cr O H O
4
2
7
2