Calculating Kc for an equilibrium reaction
|
|
|
|
HCl |
|
|
|
|
CH3COOH |
C2H5OH |
à |
CH3COOC2H5 |
H2O |
|
Moles start |
0.525 |
0.515 |
|
0.314 |
0.556 |
|
Moles eqm |
0.318 |
0.308 |
|
0.521 |
0.763 |
|
Moles reacted |
0.207 |
0.207 |
|
|
|
|
Conc eqm |
3.18 |
3.08 |
|
5.21 |
7.63 |
Calculation:
7. Now plug these values into your equilibrium expression and calculate the value. Don’t forget to work out the units.
|
Kc = |
[CH3COOC2H5] [H2O] |
|
|
[CH3COOH] [C2H5OH] |
|
Kc = |
[5.21] [7.63] |
|
|
[3.18] [3.08] |
|
Kc = |
4.06 |