NEED HELP WITH QUESTIONS 1,2,3,4 URGENTLY!!! PLEASE HELP!!! THANK YOU!!! Table 1 Concentration of Species (mol/L) Flask
Posted: Wed Jul 06, 2022 11:28 am
NEED HELP WITH QUESTIONS 1,2,3,4 URGENTLY!!! PLEASE HELP!!! THANK YOU!!!
Table 1
Concentration of Species (mol/L)
Flask
Vol. of HCl (mL)
Co(H2O)62+
Cl-
CoCl42-
Colour
Keqm
A
0
0.97
1.9
0.033
Light red
0.026
B
10
0.81
2.5
0.095
Slight darker reddish purple
0.0025
C
20
0.67
3.0
0.16
Light burgundy purple
0.0029
D
30
0.55
3.4
0.22
Light greyish purple
0.0029
E
40
0.45
3.8
0.27
Greyish purple
0.0029
Table 2
Concentration of Species (mol/L)
Flask
Vol. of AgNO3 (mL)
Co(H2O)62+
Cl-
CoCl42-
Colour
Keqm Constant
F
25
0.80
0.40
0.000058
Red
0.0028
D
50
0.55
1.4
0.0064
Red (slight bit darker + grey)
0.0030
E
50
0.51
1.9
0.020
Darker greyish red
0.0030
1. Compare the equilibrium constant for experiments involving the addition of HCl with those involving AgNO3. Are they the same? Should they be? Explain.
2. Consider Flask B. Sketch a graph showing (very roughly – i.e. higher or lower) the relative equilibrium concentrations of the 2 complex ions and the chloride ion against time before and after the addition of HCl.
3. Consider Flask F. Sketch a graph showing (very roughly – i.e. higher or lower) the relative equilibrium concentrations of the 2 complex ions and the chloride ion before and after the addition of AgNO3.
4. Consider Flask E. Sketch a graph showing (very roughly – i.e. higher or lower) the relative equilibrium concentrations of the 2 complex ions and the chloride ion from the very beginning of the experiment when the system is in equilibrium before the addition of HCl until equilibrium is regained after the addition of AgNO3.
Table 1
Concentration of Species (mol/L)
Flask
Vol. of HCl (mL)
Co(H2O)62+
Cl-
CoCl42-
Colour
Keqm
A
0
0.97
1.9
0.033
Light red
0.026
B
10
0.81
2.5
0.095
Slight darker reddish purple
0.0025
C
20
0.67
3.0
0.16
Light burgundy purple
0.0029
D
30
0.55
3.4
0.22
Light greyish purple
0.0029
E
40
0.45
3.8
0.27
Greyish purple
0.0029
Table 2
Concentration of Species (mol/L)
Flask
Vol. of AgNO3 (mL)
Co(H2O)62+
Cl-
CoCl42-
Colour
Keqm Constant
F
25
0.80
0.40
0.000058
Red
0.0028
D
50
0.55
1.4
0.0064
Red (slight bit darker + grey)
0.0030
E
50
0.51
1.9
0.020
Darker greyish red
0.0030
1. Compare the equilibrium constant for experiments involving the addition of HCl with those involving AgNO3. Are they the same? Should they be? Explain.
2. Consider Flask B. Sketch a graph showing (very roughly – i.e. higher or lower) the relative equilibrium concentrations of the 2 complex ions and the chloride ion against time before and after the addition of HCl.
3. Consider Flask F. Sketch a graph showing (very roughly – i.e. higher or lower) the relative equilibrium concentrations of the 2 complex ions and the chloride ion before and after the addition of AgNO3.
4. Consider Flask E. Sketch a graph showing (very roughly – i.e. higher or lower) the relative equilibrium concentrations of the 2 complex ions and the chloride ion from the very beginning of the experiment when the system is in equilibrium before the addition of HCl until equilibrium is regained after the addition of AgNO3.