Pages in this set

Page 1

Preview of page 1
+6
+3
+2
XS NH
3

[Cr(NH
3

)
6
]3+
purple solution
NaOH

Page 2

Preview of page 2
acid H+
acid H+

1
2 Chromium
Cr
2

O
7
2-

CrO
4 2- 1a) R = Zn, C = HCl
E = Zn --> Zn2+

orange
solution
11

yellow
solution
1b) R = FeSO
4

,C=H
2

SO
4(aq)

E = Fe2+ --> Fe3+
1
1c) R =…

Page 3

Preview of page 3
SO
4(aq)

XS NaOH

Cr(OH)
3
acid H+
green solution
23
R=H
2

O
2,

C = NaOH E = H
2

4
56
8 7 R = Zn, C = HCl/ absence of
air E = Zn --> Zn2+
O
2

--> OH-
NaOH
NH
3

or Na
2…

Page 4

Preview of page 4
O)
3

[Cr(H
2

O)
6
]3+

Cr(OH)
3

[Cr(OH)
6
]3- green precipitate
(H
2

O)
3

dark green
green solution
precipitate

[Cr(H
2
R=O
2

(from air) E = O
2

--> H
2

O

O)

Page 5

Preview of page 5
6
]2+
blue solution

Page 6

Preview of page 6
Cobalt +3
Co(OH)
3

(H
2

O)
3 ]3+ CoCl
4

+2
[Co(H
2

Comments

No comments have yet been made

Similar Chemistry resources:

See all Chemistry resources »

Pages in this set

Page 1

Preview of page 1
+6
+3
+2
XS NH
3

[Cr(NH
3

)
6
]3+
purple solution
NaOH

Page 2

Preview of page 2
acid H+
acid H+

1
2 Chromium
Cr
2

O
7
2-

CrO
4 2- 1a) R = Zn, C = HCl
E = Zn --> Zn2+

orange
solution
11

yellow
solution
1b) R = FeSO
4

,C=H
2

SO
4(aq)

E = Fe2+ --> Fe3+
1
1c) R =…

Page 3

Preview of page 3
SO
4(aq)

XS NaOH

Cr(OH)
3
acid H+
green solution
23
R=H
2

O
2,

C = NaOH E = H
2

4
56
8 7 R = Zn, C = HCl/ absence of
air E = Zn --> Zn2+
O
2

--> OH-
NaOH
NH
3

or Na
2…

Page 4

Preview of page 4
O)
3

[Cr(H
2

O)
6
]3+

Cr(OH)
3

[Cr(OH)
6
]3- green precipitate
(H
2

O)
3

dark green
green solution
precipitate

[Cr(H
2
R=O
2

(from air) E = O
2

--> H
2

O

O)

Page 5

Preview of page 5
6
]2+
blue solution

Page 6

Preview of page 6
Cobalt +3
Co(OH)
3

(H
2

O)
3 ]3+ CoCl
4

+2
[Co(H
2

Comments

No comments have yet been made