Question: Please answer 1-5 also fill out Keqm box with the answer in table 1 please 1. Calculate the equilibrium constant at each temperature for the
Please answer 1-5 also fill out Keqm box with the answer in table 1 please
1. Calculate the equilibrium constant at each temperature for the reaction:
.
Show your calculations and record the results in Table 1.
| Table 1 | Concentration of Species (mol/L) |
|
| ||
| Temperature | Co(H2O)62+ | Cl- | CoCl42- | Colour | Keqm |
| 10oC 0 | 1.00 | 1.97 | 0.006 | Light red |
|
| 25oC 10 | 0.97 | 1.87 | 0.034 | Light red |
|
| 50oC 20 | 0.84 | 1.37 | 0.156 | purple |
|
| 80oC 30 | 0.71 | 0.81 | 0.297 | Dark purple |
|
2. What do the differences in colour of the solutions indicate?
3. Is this reaction exothermic or endothermic? Explain your reasoning.
4. Write an equation for the reaction including heat as a term in the equation.
5. State the effect on the equilibrium constant if:
a. the temperature of an endothermic reaction is increased
b. the temperature of an endothermic reaction is decreased
c. the temperature of an exothermic reaction is increased.
d. the temperature of an exothermic reaction is decreased.
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