Baứi 1.Chuoói phaỷn ửựng
KClO
3
O
2
S SO
2
NaHSO
3
Na
2
SO
3
SO
2
S
H
2
S H
2
SO
4
Fe
2
(SO
4
)
3
Fe(NO
3
)

H S
ri ho tan hon ton sn phm sinh ra vo 80ml dd NaOH 25%
(d=1,28g/ml). xỏc nh khi lng mui to thnh.
ỏp ỏn:
Bi 3: a)%Clo =33,3% , %Brom=66,7%
b) C%HCl =3,04%,
M
C
(HCl) = 1M; C%HBr =13,5%,
M
C
HBr = 2M
c) m=
103,9
AgCl AgBr
m m g+ =
Vdd= 1,2lớt
Bi 4.
2 3 3
30,24 , 16,64
Na SO NaHSO
m g m g= =