Cobalt(II)-chloride system 1. Prepare two test tubes (T1,T2). T1 serves as the control. 2. To both test tubes, add 1 mL 0. 10 M CoCl Note the color of the solution. 3. To T2, add concentrated HC1 dropwise until a color change occurs. Predominant species responsible for color Condition Color of solution Before adding HCı After adding HC1 In warm bath Back to ambient bath In cold bath Give the reaction equilibrium that describes this system: Is the forward reaction (as written above) endothermic or exothermic?

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Cobalt(II)-chloride system
1. Prepare two test tubes (T1,T2). T1 serves as the control.
2. To both test tubes, add 1 ml 0. 10 M CoCl, Note the color of the solution.
3. To T2, add concentrated HCl dropwise until a color change occurs.
Condition
Color of solution
Predominant species
responsible for color
Before adding HCi
After adding HC1
In warm bath
Back to ambient bath
In cold bath
Give the reaction equilibrium that describes this system:
Is the forward reaction (as written above) endothermic or exothermic?
Transcribed Image Text:Cobalt(II)-chloride system 1. Prepare two test tubes (T1,T2). T1 serves as the control. 2. To both test tubes, add 1 ml 0. 10 M CoCl, Note the color of the solution. 3. To T2, add concentrated HCl dropwise until a color change occurs. Condition Color of solution Predominant species responsible for color Before adding HCi After adding HC1 In warm bath Back to ambient bath In cold bath Give the reaction equilibrium that describes this system: Is the forward reaction (as written above) endothermic or exothermic?
Chemical
Concentration
Risk phrases
Safety phrases
Feso.
0.10 M
None listed
None listed
AgNO,
0.10 M
36/38, 50/53
26,57,60
KĻF¢(CN),
None listed
0.10 M
None listed
KSCN
0.10 M
None listed
None listed
HCI
12.1 M (concentrated)
34,37
25,45
Cuso,
None listed
0.10 M
None listed
NH,
1м
None listed
None listed
K,Cro,
0.10 M
25,36/37/38,43,46,49
None listed
K_Cr.0,
0.10 M
45,46,20/21,51/53
53,36/37,45,61
H sO,
2.0 M
None listed
None listed
NAOH
2.0 M
None listed
None listed
FeCl,
0.10 M
22,38,41
26,39
CoCl,
0.10 M
49,60,68,42/43,51/53
23,36/37,45,61
Transcribed Image Text:Chemical Concentration Risk phrases Safety phrases Feso. 0.10 M None listed None listed AgNO, 0.10 M 36/38, 50/53 26,57,60 KĻF¢(CN), None listed 0.10 M None listed KSCN 0.10 M None listed None listed HCI 12.1 M (concentrated) 34,37 25,45 Cuso, None listed 0.10 M None listed NH, 1м None listed None listed K,Cro, 0.10 M 25,36/37/38,43,46,49 None listed K_Cr.0, 0.10 M 45,46,20/21,51/53 53,36/37,45,61 H sO, 2.0 M None listed None listed NAOH 2.0 M None listed None listed FeCl, 0.10 M 22,38,41 26,39 CoCl, 0.10 M 49,60,68,42/43,51/53 23,36/37,45,61
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